[ENG-9429] Emit meaningful runtime metrics

[sampan-s-nayak]

emitting following metrics:

hudi_metadata_extractor_table_discovery_success -> successful discovery round
hudi_metadata_extractor_table_discovery_failure -> num failures during discovery
hudi_metadata_extractor_table_sync_success -> successful sync rounds
hudi_metadata_extractor_table_sync_failure -> failed sync rounds (wont alert on this)
hudi_metadata_extractor_table_metadata_processing_failure -> failures with classified reasons (will alert on a subset of these)

a gauge metric to keep track of number of discovered tables

[nimahajan]

Task linked: ENG-9429 Hudi metadata extractor metrics and alerting

[sonarcloud[bot]]

Quality Gate passed

Issues
25 New issues
5 Accepted issues

Measures
0 Security Hotspots
80.2% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud