Lark alerter support

[seanyinx]

Description

• Added Lark alerter

Checklist

• I have reviewed the contributing guidelines.
• I have included unit tests for my changes or additions.
• I have successfully run make test-docker with my changes.
• I have manually tested all relevant modes of the change in this PR.
• I have updated the documentation.
• I have updated the changelog.

Questions or Comments

[nsano-rururu]

Please add documentation about Lark alerter
https://github.com/jertel/elastalert2/blob/master/docs/source/ruletypes.rst

[nsano-rururu]

Changes were made to python:3.11-slim in another pull request, so no changes are required in this pull request.

[nsano-rururu]

It seems that the description in schema.yaml is incorrect.
Please modify as below.

  ### Lark
  lark_bot_id: {type: string}
  lark_msgtype: {type: string, enum: ['text']}

[jertel]

@seanyinx Do you think you'll have time to update the docs and make those minor changes @nsano-rururu suggested in the next few days? If so I'll be able to include this in the next release. It's not urgent so if you need more time we can leave this for the next in about 2 months. Thanks!

[seanyinx]

@seanyinx Do you think you'll have time to update the docs and make those minor changes @nsano-rururu suggested in the next few days? If so I'll be able to include this in the next release. It's not urgent so if you need more time we can leave this for the next in about 2 months. Thanks!

Sorry, I was on vacation last week. It's not urgent and I will make the changes as suggested today.

[seanyinx]

It seems that the description in schema.yaml is incorrect. Please modify as below.

  ### Lark
  lark_bot_id: {type: string}
  lark_msgtype: {type: string, enum: ['text']}

@nsano-rururu @jertel Docs on Lark alerter added and suggested changes made. Thanks.