feat: admin http api

[jun0315]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

support admin meta http api.

feature

1. Query the catalog list.
2. Query the schema list by catalog name.
3. Query the table list by catalog name and schema name.
4. Query table info by full table name.
5. Query the information of the meta leader node.
6. Query heartbeat by ip.

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.

Refer to a related PR or issue link (optional)

[codecov]

Codecov Report

Merging #1026 (9aae0e4) into develop (a19dee1) will decrease coverage by 0.46%.
The diff coverage is 43.66%.

@@             Coverage Diff             @@
##           develop    #1026      +/-   ##
===========================================
- Coverage    85.98%   85.53%   -0.46%     
===========================================
  Files          436      448      +12     
  Lines        62869    65075    +2206     
===========================================
+ Hits         54060    55660    +1600     
- Misses        8809     9415     +606     

Flag	Coverage Δ
rust	85.53% <43.66%> (-0.46%)	⬇️

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

Impacted Files	Coverage Δ
src/catalog/src/helper.rs	85.50% <ø> (ø)
src/meta-srv/src/service/admin.rs	60.00% <0.00%> (-13.55%)	⬇️
src/meta-srv/src/service/admin/leader.rs	0.00% <0.00%> (ø)
src/meta-srv/src/service/admin/meta.rs	37.39% <37.39%> (ø)
src/meta-srv/src/service/admin/heartbeat.rs	68.67% <86.36%> (+68.67%)	⬆️
src/object-store/src/test_util.rs	0.00% <0.00%> (-100.00%)	⬇️
src/storage/src/compaction/scheduler.rs	8.82% <0.00%> (-80.18%)	⬇️
src/storage/src/compaction/picker.rs	23.07% <0.00%> (-19.24%)	⬇️
src/datatypes/src/vectors/operations.rs	81.35% <0.00%> (-18.65%)	⬇️
src/datanode/src/instance.rs	43.77% <0.00%> (-14.19%)	⬇️
... and 114 more

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[fengys1996]

Suggest add some unit tests.

[fengys1996]

LGTM