feat: better format tool devex

[Peefy]

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

• N
• Y

Closes #627

• feat: better format tool devex

[He1pa]

LGTM

[zong-zhe]

LGTM

[coveralls]

Pull Request Test Coverage Report for Build 10449297710

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

• 298 of 299 (99.67%) changed or added relevant lines in 4 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.08%) to 70.665%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
kclvm/ast_pretty/src/lib.rs	2	3	66.67%

Totals
Change from base Build 10429265865:	0.08%
Covered Lines:	50806
Relevant Lines:	71897

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💛 - Coveralls