pdms: support primary/transfer api for scheduling and tso

[HuSharp]

What problem does this PR solve?

Issue Number: Ref #5766, #7519

What is changed and how does it work?

$ curl --location --request GET 'http://127.0.0.1:2379/pd/api/v2/ms/primary/tso'
"http://127.0.0.1:2384"

$ curl --location --request POST 'http://127.0.0.1:2382/tso/api/v1/member/primary/transfer' \
--header 'service-allow-direct-handle: true'
"transfer submitted!"

$ curl --location --request GET 'http://127.0.0.1:2379/pd/api/v2/ms/primary/tso'
"http://127.0.0.1:2382"

Check List

Tests

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

Release note

None.

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[codecov]

Codecov Report

Attention: Patch coverage is 40.36145% with 99 lines in your changes are missing coverage. Please review.

Project coverage is 77.31%. Comparing base (a3c5950) to head (15fc759).
Report is 3 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #8148      +/-   ##
==========================================
- Coverage   77.35%   77.31%   -0.05%     
==========================================
  Files         471      471              
  Lines       61348    61471     +123     
==========================================
+ Hits        47458    47528      +70     
- Misses      10314    10382      +68     
+ Partials     3576     3561      -15     

Flag	Coverage Δ
unittests	77.31% <40.36%> (-0.05%)	⬇️

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[HuSharp]

replaced by #8157