feat: add workspace config apis for kusion server

[liu-hm19]

What type of PR is this?

/kind feature

What this PR does / why we need it:

This PR adds the workspace config-related apis for kusion server.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?

Additional documentation e.g., design docs, usage docs, etc.:

[coveralls]

Pull Request Test Coverage Report for Build 11832783033

Details

• 11 of 266 (4.14%) changed or added relevant lines in 6 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.6%) to 48.864%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/domain/request/workspace_request.go	0	3	0.0%
pkg/server/manager/workspace/types.go	0	11	0.0%
pkg/server/manager/workspace/workspace_manager.go	0	12	0.0%
pkg/server/handler/workspace/configs.go	0	52	0.0%
pkg/server/manager/workspace/configs.go	0	177	0.0%

Totals
Change from base Build 11830314219:	-0.6%
Covered Lines:	10558
Relevant Lines:	21607

---

💛 - Coveralls

[ffforest]

lgtm

[ffforest]

lgtm