feat(cli): enable graceful exit

[jianzs]

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

• N
• Y

re #45

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

• cli

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

• 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

[changeset-bot]

🦋 Changeset detected

Latest commit: 98f2513

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@plutolang/cli	Patch

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