[WIP] feat: make 'kpm run' supports mvs

[zong-zhe]

This PR structure is too large, and will not be merged, it will be merged through several sub PRs.

[ ] - Split resolver, visitor from the package client to solve the problem of method namesake caused by the WithOption pattern in the same package.

• • Add loader to load kcl package to solve the problem of cyclic dependencies between resolver, visitor and client refactor: refactor load package #488
• • Split visitor refactor: split visitor from client #490
• • Split resolver refactor: split resolver from client #491

[ ] - The new Update() interface with the mvs version currently lacks the capability to support all functions of the run command. This missing parts needs to be completed.

[ ] - Porting the run command to the new Update() interface with the mvs version requires adjusting some test cases.

[ ] - Unify different variable names such as IsVendor and EnableVendorMode that have the same meaning.

[coveralls]

Pull Request Test Coverage Report for Build 10823477085

Warning: This coverage report may be inaccurate.

This pull request's base commit is no longer the HEAD commit of its target branch. This means it includes changes from outside the original pull request, including, potentially, unrelated coverage changes.

• For more information on this, see Tracking coverage changes with pull request builds.
• To avoid this issue with future PRs, see these Recommended CI Configurations.
• For a quick fix, rebase this PR at GitHub. Your next report should be accurate.

Details

• 306 of 490 (62.45%) changed or added relevant lines in 8 files are covered.
• 89 unchanged lines in 5 files lost coverage.
• Overall coverage decreased (-0.09%) to 41.954%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/client/client.go	8	9	88.89%
pkg/downloader/source.go	0	3	0.0%
pkg/client/update.go	67	80	83.75%
pkg/downloader/downloader.go	0	28	0.0%
pkg/client/resolver.go	126	191	65.97%
pkg/client/visitor.go	99	173	57.23%

Files with Coverage Reduction	New Missed Lines	%
pkg/downloader/downloader.go	1	36.67%
pkg/client/visitor.go	1	53.16%
pkg/client/resolver.go	1	70.37%
pkg/client/update.go	1	81.97%
pkg/client/client.go	85	54.44%

Totals
Change from base Build 10735403800:	-0.09%
Covered Lines:	3569
Relevant Lines:	8507

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💛 - Coveralls