WIP feat(sync_metrics): add metrics of tip and best shared tip per 10 minutes while syncing

[chanhsu001]

What problem does this PR solve?

Problem Summary: Add metrics of current tip and best shared tip per 10 minutes while syncing, save the data into file for later line chart generated. the saved data format is like 'datetime|current_tip|best_shared_tip' with multiple lines. line chart is more suitable for data demostration.

What is changed and how it works?

What's Changed:

• metrics of current tip and best shared tip in CI task
• install ckb-cli to invoke rpc (remove it later)
• add shell script running background to metrics
• add python script to draw line chart (not ready)

Tests

• local test