refactor: update x/group relevant logic in x/foundation

[0Tech]

Description

This patch updates the proposal related logic of x/foundation into the latest x/group's.

The major changes are:

• Split Member into Member and the new MemberRequest which is specific to Msg/UpdateMembers.
  • Member no more needs participating field.
  • New remove field is introduced into MemberRequest.
• Merge ProposalResult into ProposalStatus.

Checklist:

• I followed the contributing guidelines and code of conduct.
• I have added a relevant changelog to CHANGELOG.md
• I have added tests to cover my changes.
• I have updated the documentation accordingly.
• I have updated API documentation client/docs/swagger-ui/swagger.yaml

[codecov]

Codecov Report

Merging #698 (ebb9887) into main (954dec7) will increase coverage by 0.06%.
The diff coverage is 90.47%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #698      +/-   ##
==========================================
+ Coverage   61.16%   61.22%   +0.06%     
==========================================
  Files         873      873              
  Lines       98474    98501      +27     
==========================================
+ Hits        60227    60312      +85     
+ Misses      34659    34616      -43     
+ Partials     3588     3573      -15     

Impacted Files	Coverage Δ
x/foundation/keeper/proposal.go	64.94% <63.63%> (-0.56%)	⬇️
x/foundation/keeper/tally.go	57.69% <68.18%> (+16.42%)	⬆️
x/foundation/keeper/msg_server.go	81.95% <88.88%> (+7.44%)	⬆️
x/foundation/keeper/member.go	89.11% <91.30%> (+2.62%)	⬆️
x/foundation/client/testutil/query.go	100.00% <100.00%> (ø)
x/foundation/client/testutil/suite.go	97.89% <100.00%> (-0.02%)	⬇️
x/foundation/client/testutil/tx.go	99.24% <100.00%> (ø)
x/foundation/foundation.go	83.96% <100.00%> (+2.44%)	⬆️
x/foundation/genesis.go	75.72% <100.00%> (-1.13%)	⬇️
x/foundation/keeper/exec.go	88.57% <100.00%> (+10.44%)	⬆️
... and 12 more

[dudong2]

LGTM