mq(ticdc): encoder group support batch encode protocol (#7546)

[ti-chi-bot]

This is an automated cherry-pick of #7546

What problem does this PR solve?

Issue Number: close #7543

What is changed and how it works?

• make batch encoding protocol, such as open-protocol and canal can be used by the encoder group
• change the previous batch-group-send process into batch-group and send pipeline.

open-protocol throughput increaased from around 5k to 32k

• add worker batch duration and worker batch size histogram to track metrics and update the monitoring.

• rename worker flush duration to worker send message duration, only track the time cost duration on send messages.

Check List

Tests

• Unit test
• Manual test (add detailed scripts or steps below)

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

`None`

[ti-chi-bot]

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[3AceShowHand]

closed by #7562