add some metrics in bottomless

[sivukhin]

Context

Add few metrics to monitor bottomless

• bottomless_s3_processed_frame_ranges - amount of frame ranges processed by S3 upload process
• bottomless_local_ready_frame_ranges - amount of frame ranges ready to upload to S3
• bottomless_s3_queue_size - size of the local queue for transferring frames ranges to S3
• bottomless_local_last_frame_no - last processed frame number by local process
• bottomless_s3_processing_frame_no - last frame number which S3 upload process started to handle
• bottomless_local_flush_time - local frames flush time histogram
• bottomless_snapshot_upload_time - snapshot upload time histogram
• bottomless_restore_upload_files_time - restore upload files time histogram
• bottomless_s3_write_time - s3 write time histogram

Example of new metrics part:

# TYPE bottomless_local_ready_frame_ranges counter
bottomless_local_ready_frame_ranges{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 1
# TYPE bottomless_s3_processed_frame_ranges counter
bottomless_s3_processed_frame_ranges{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 1
# TYPE bottomless_local_last_frame_no gauge
bottomless_local_last_frame_no{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 29
# TYPE bottomless_s3_processing_frame_no gauge
bottomless_s3_processing_frame_no{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 29
# TYPE bottomless_s3_queue_size gauge
bottomless_s3_queue_size{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 0
# TYPE bottomless_local_flush_time summary
bottomless_local_flush_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0"} 0.00522327
bottomless_local_flush_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.5"} 0.00522291281325299
bottomless_local_flush_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.9"} 0.00522291281325299
bottomless_local_flush_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.95"} 0.00522291281325299
bottomless_local_flush_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.99"} 0.00522291281325299
bottomless_local_flush_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.999"} 0.00522291281325299
bottomless_local_flush_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="1"} 0.00522327
bottomless_local_flush_time_sum{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 0.00522327
bottomless_local_flush_time_count{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 1
# TYPE bottomless_snapshot_upload_time summary
bottomless_snapshot_upload_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0"} 0.000273856
bottomless_snapshot_upload_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.5"} 0.0002738582195644762
bottomless_snapshot_upload_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.9"} 0.0002738582195644762
bottomless_snapshot_upload_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.95"} 0.0002738582195644762
bottomless_snapshot_upload_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.99"} 0.0002738582195644762
bottomless_snapshot_upload_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.999"} 0.0002738582195644762
bottomless_snapshot_upload_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="1"} 0.000273856
bottomless_snapshot_upload_time_sum{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 0.000273856
bottomless_snapshot_upload_time_count{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 1
# TYPE bottomless_restore_upload_files_time summary
bottomless_restore_upload_files_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0"} 0.000599889
bottomless_restore_upload_files_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.5"} 0.0005999285280686782
bottomless_restore_upload_files_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.9"} 0.0005999285280686782
bottomless_restore_upload_files_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.95"} 0.0005999285280686782
bottomless_restore_upload_files_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.99"} 0.0005999285280686782
bottomless_restore_upload_files_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.999"} 0.0005999285280686782
bottomless_restore_upload_files_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="1"} 0.000599889
bottomless_restore_upload_files_time_sum{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 0.000599889
bottomless_restore_upload_files_time_count{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 1
# TYPE bottomless_s3_write_time summary
bottomless_s3_write_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0"} 0.016363314
bottomless_s3_write_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.5"} 0.016363532981475075
bottomless_s3_write_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.9"} 0.016363532981475075
bottomless_s3_write_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.95"} 0.016363532981475075
bottomless_s3_write_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.99"} 0.016363532981475075
bottomless_s3_write_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="0.999"} 0.016363532981475075
bottomless_s3_write_time{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default",quantile="1"} 0.04838371
bottomless_s3_write_time_sum{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 0.064747024
bottomless_s3_write_time_count{db_name="ns-5d64e223-21a3-4835-9815-9613216d9859:default"} 2