feat: add status api

[hzliangbin]

ref: https://github.com/cectc/dbpack/issues/

Ⅰ. Describe what this PR did

provide status api view dbpack listener and dt info

Ⅱ. Does this pull request fix one issue?

Ⅲ. Why don't you add test cases (unit test/integration test)?

Ⅳ. Describe how to verify it

Ⅴ. Special notes for reviews

[codecov-commenter]

Codecov Report

Merging #139 (59bb73c) into dev (056a303) will not change coverage.
The diff coverage is n/a.

❗ Current head 59bb73c differs from pull request most recent head b23d635. Consider uploading reports for the commit b23d635 to get more accurate results

@@           Coverage Diff           @@
##              dev     #139   +/-   ##
=======================================
  Coverage   49.42%   49.42%           
=======================================
  Files          62       62           
  Lines        6458     6458           
=======================================
  Hits         3192     3192           
  Misses       2970     2970           
  Partials      296      296           

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[dk-lockdown]

LGTM

[adofsauron]

LGTM