Add fmt, vet, and precheck targets to Makefile for better CI and code quality

[jinronga]

…e quality

• Add fmt and vet targets to Makefile for code formatting and static analysis.
• Add precheck target to run fmt, vet, lint, and test in one command.
• Update help section to document new targets.
• This improves developer experience and CI code quality checks.
• These changes improve developer experience and make it easier to maintain code quality in CI.

Description

Related Issue

Motivation and Context

Screenshots (if appropriate)

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation Update (if none of the other choices apply)

Checklist

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 32.85%. Comparing base (d32cf54) to head (b5dbd6b).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4182      +/-   ##
==========================================
- Coverage   32.88%   32.85%   -0.04%     
==========================================
  Files         350      350              
  Lines       41064    41064              
==========================================
- Hits        13505    13490      -15     
- Misses      26667    26680      +13     
- Partials      892      894       +2     

Flag	Coverage Δ
unittests	32.85% <ø> (-0.04%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

see 4 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[chlins]

lgtm