webui(dm): initial implementation

[zoubingwu]

What problem does this PR solve?

Added web ui for dm

• create source
• list all source

Release note

Add a web user interface for dm

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Ehco1996
• lance6716

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

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[CLAassistant]

All committers have signed the CLA.

[codecov-commenter]

Codecov Report

Merging #3449 (7fe6ea6) into master (eed6f9b) will decrease coverage by 0.3604%.
The diff coverage is 59.8130%.

Flag	Coverage Δ
cdc	58.0087% <76.1479%> (-0.4285%)	⬇️
dm	56.0807% <44.2143%> (-0.2945%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

@@               Coverage Diff                @@
##             master      #3449        +/-   ##
================================================
- Coverage   57.3452%   56.9847%   -0.3605%     
================================================
  Files           460        472        +12     
  Lines         54927      56122      +1195     
================================================
+ Hits          31498      31981       +483     
- Misses        20180      20882       +702     
- Partials       3249       3259        +10     

[Ehco1996]

@zoubingwu ci failed https://github.com/pingcap/ticdc/runs/4428126477?check_suite_focus=true

[Ehco1996]

LGTM

[baurine]

lgtm

[Ehco1996]

could you please take another look for this pr ? thanks 🧡🧡🧡

/cc @lance6716 @lichunzhu @glorv

[zoubingwu]

fixed mentioned issues, need one more approval

cc @lance6716 @lichunzhu @baurine @glorv

[ti-chi-bot]

@baurine: Thanks for your review. The bot only counts approvals from reviewers and higher roles in list, but you're still welcome to leave your comments.

In response to this:

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[lance6716]

rest lgtm

[lance6716]

/merge

[ti-chi-bot]

@lance6716: /merge in this pull request requires 2 approval(s).

In response to this:

/merge

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[lance6716]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: caa5c55

[Ehco1996]

/run-integration-test

[purelind]

/run-integration-test

[ti-chi-bot]

@zoubingwu: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.