feat: add http API

[ZuLiangWang]

Rationale

Add a new API for deleting node shards and get register nodes

Detailed Changes

• Add DropNodeShards API.
• Modify GetNodeShards interface to make it conform to the style of Restful API.
• Add GetNode API.

Test Plan

Pass all unit tests and integration test.

[codecov[bot]]

Codecov Report

Merging #223 (35d7450) into main (7f1354e) will increase coverage by 21.48%. Report is 29 commits behind head on main. The diff coverage is 65.14%.

@@             Coverage Diff             @@
##             main     #223       +/-   ##
===========================================
+ Coverage   39.66%   61.14%   +21.48%     
===========================================
  Files          34       43        +9     
  Lines        4213     5338     +1125     
===========================================
+ Hits         1671     3264     +1593     
+ Misses       2317     1674      -643     
- Partials      225      400      +175     

Files Changed	Coverage Δ
pkg/coderr/code.go	0.00% <ø> (ø)
server/cluster/metadata/types.go	0.00% <0.00%> (ø)
server/coordinator/procedure/util.go	0.00% <ø> (ø)
server/storage/meta.go	0.00% <ø> (ø)
server/storage/storage_impl.go	57.21% <0.00%> (-5.10%)	:arrow_down:
server/member/watch_leader.go	40.62% <20.00%> (-2.71%)	:arrow_down:
server/cluster/manager.go	38.96% <23.18%> (ø)
server/coordinator/factory.go	76.68% <27.27%> (+72.22%)	:arrow_up:
.../operation/transferleader/batch_transfer_leader.go	33.80% <33.80%> (ø)
server/member/member.go	47.70% <47.82%> (-1.02%)	:arrow_down:
... and 21 more

... and 1 file with indirect coverage changes

[ShiKaiWi]

@ZuLiangWang This pr is outdated, how about making a rebase to resolve the conflicts?

[ZuLiangWang]

This PR has expired and is used by other interfaces.