add: support project/stack tree view

[amyXia1994]

1. Does this PR affect any open issues?(Y/N) and add issue references (e.g. "fix #123", "re #123".):

• [ ] N
• [X] Y related to #25

  11

2. What is the scope of this PR (e.g. component or file name):

package.json src/commands.ts src/extension.ts src/ocmp.ts src/preview.ts src/project-tree.ts src/quickstart/minikube.ts src/quickstart/setup.ts src/stack.ts src/tasks.ts src/util.ts

3. Provide a description of the PR(e.g. more details, effects, motivations or doc link):

support project/stack tree view

• [ ] Affects user behaviors
• [ ] Contains syntax changes
• [ ] Contains variable changes
• [ ] Contains experimental features
• [ ] Performance regression: Consumes more CPU
• [ ] Performance regression: Consumes more Memory
• [ ] Other

4. Are there any breaking changes?(Y/N) and describe the breaking changes(e.g. more details, motivations or doc link):

• [ ] N
• [ ] Y

5. Are there test cases for these changes?(Y/N) select and add more details, references or doc links:

• [ ] Unit test
• [ ] Integration test
• [ ] Benchmark (add benchmark stats below)
• [ ] Manual test (add detailed scripts or steps below)
• [ ] Other

6. Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None