feat(pdk): add config file support

[ulivz]

Summary

Added config file support with defineConfig function, refactored types to extract common options, and ensured CLI/Node.js API/Config API are isomorphic.

Configuration Example

import { defineConfig } from 'pnpm-dev-kit';

export default defineConfig({
  common: {
    tagPrefix: 'v',
    dryRun: false,
  },
  ai: {
    useAi: true,
    model: 'gpt-4o',
  },
  filter: {
    filterTypes: ['feat', 'fix', 'perf'],
  },
  release: {
    changelog: true,
    pushTag: true,
    createGithubRelease: true,
  },
});

Checklist

• Added or updated necessary tests (Optional).
• Updated documentation to align with changes (Optional).
• Verified no breaking changes, or prepared solutions for any occurring breaking changes (Optional).
• My change does not involve to above items.

[netlify]

✅ Deploy Preview for tarko canceled.

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[netlify]

✅ Deploy Preview for agent-tars-docs canceled.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 14.27%. Comparing base (9bd2948) to head (34e064a).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1759   +/-   ##
=======================================
  Coverage   14.27%   14.27%           
=======================================
  Files         250      250           
  Lines        8565     8565           
  Branches     1674     1674           
=======================================
  Hits         1223     1223           
  Misses       7166     7166           
  Partials      176      176           

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