feat: raft manager (part1)

[MrCroxx]

As titled.

Changes:

• Implement raft service.
• Add basic test for raft manager.
• Update openraft dep.

Ref: #88 .

[codecov]

Codecov Report

Merging #103 (cecb49a) into main (228cb3f) will increase coverage by 0.71%.
The diff coverage is 53.11%.

@@            Coverage Diff             @@
##             main     #103      +/-   ##
==========================================
+ Coverage   82.14%   82.85%   +0.71%     
==========================================
  Files          67       67              
  Lines        6327     6545     +218     
==========================================
+ Hits         5197     5423     +226     
+ Misses       1130     1122       -8     

Impacted Files	Coverage Δ
common/src/channel_pool.rs	79.48% <ø> (ø)
wheel/src/components/gear.rs	8.69% <0.00%> (-0.61%)	⬇️
wheel/src/error.rs	0.00% <0.00%> (ø)
wheel/src/service.rs	41.02% <36.41%> (-12.64%)	⬇️
wheel/src/components/raft_manager.rs	85.56% <86.04%> (+66.00%)	⬆️
wheel/src/components/network.rs	60.44% <100.00%> (+55.10%)	⬆️
wheel/src/lib.rs	92.43% <100.00%> (+0.03%)	⬆️
wheel/src/components/raft_log_store.rs	68.94% <0.00%> (+4.18%)	⬆️
... and 1 more

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