chore: add changelog for release-2.0

[STRRL]

Signed-off-by: STRRL str_ruiling@outlook.com

What problem does this PR solve?

It's a part of #2799

Create CHANGELOG.md for release-2.0

What's changed and how it works?

Related changes

• Need to update chaos-mesh/website
• Need to update Dashboard UI
• Need to cheery-pick to release branches
  • release-2.1
  • release-2.0

Checklist

Tests

• Unit test
• E2E test
• No code
• Manual test (add steps below)

Side effects

• Breaking backward compatibility

Release note

Please add a release note.

You can safely ignore this section if you don't think this PR needs a release note.

DCO

If you find the DCO check fails, please run commands like below (Depends on the actual situations. For example, if the failed commit isn't the most recent) to fix it:

git commit --amend --signoff
git push --force

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• g1eny0ung
• iguoyr

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[codecov]

Codecov Report

Merging #2800 (9f4a67c) into release-2.0 (bcedc38) will increase coverage by 0.14%.
The diff coverage is n/a.

@@               Coverage Diff               @@
##           release-2.0    #2800      +/-   ##
===============================================
+ Coverage        41.99%   42.14%   +0.14%     
===============================================
  Files              127      127              
  Lines            10877    10877              
===============================================
+ Hits              4568     4584      +16     
+ Misses            5982     5966      -16     
  Partials           327      327              

Impacted Files	Coverage Δ
pkg/workflow/controllers/chaos_node_reconciler.go	56.00% <0.00%> (-2.29%)	⬇️
pkg/selector/pod/selector.go	45.12% <0.00%> (+0.42%)	⬆️
pkg/workflow/controllers/utils.go	87.30% <0.00%> (+1.58%)	⬆️
.../workflow/controllers/workflow_entry_reconciler.go	55.49% <0.00%> (+6.80%)	⬆️
controllers/finalizers/controller.go	59.01% <0.00%> (+11.47%)	⬆️

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[g1eny0ung]

LGTM

[iguoyr]

LGTM

[STRRL]

/merge

[ti-chi-bot]

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

Commit hash: 8a1e92a