Add new palette & text specs

[leejiwoo2002]

Self Checklist

• I wrote a PR title in English.
• I added an appropriate label to the PR.
• I wrote a commit message in English.
• I wrote a commit message according to the Conventional Commits specification.
• I added the appropriate changeset for the changes.
• [Component] I wrote a unit test about the implementation.
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Summary

add new foundation specs for meet feature

Details

add 2 color palette

• grey50_80
• grey850_80

add 2 text specs

• size30
• size36

add 3 semantic colors

• bg-grey-dim-lightest
• light: grey50_80
• dark: grey850_80

Breaking change or not (Yes/No)

No

References

desk thread
figma

[changeset-bot]

🦋 Changeset detected

Latest commit: 20c37af

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

This PR includes changesets to release 2 packages

Name	Type
@channel.io/bezier-react	Patch
bezier-figma-plugin	Patch

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[github-actions]

Chromatic Report

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[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: +0.01 🎉

Comparison is base (f46218e) 77.88% compared to head (20c37af) 77.89%.

Additional details and impacted files

@@             Coverage Diff             @@
##           next-v1    #1228      +/-   ##
===========================================
+ Coverage    77.88%   77.89%   +0.01%     
===========================================
  Files          295      295              
  Lines         3784     3786       +2     
  Branches       836      836              
===========================================
+ Hits          2947     2949       +2     
  Misses         552      552              
  Partials       285      285              

Impacted Files	Coverage Δ
...ezier-react/src/foundation/Colors/Palette/index.ts	100.00% <ø> (ø)
...t/src/foundation/Colors/Theme/presets/DarkTheme.ts	100.00% <ø> (ø)
.../src/foundation/Colors/Theme/presets/LightTheme.ts	100.00% <ø> (ø)
packages/bezier-react/src/foundation/Typography.ts	100.00% <100.00%> (ø)

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[leejiwoo2002]

BaseMonoPaletteKey를 쓰기엔 아직 커버하지 못하는 색상들이 있어서 우선 별개로 작성해두었습니다

[sungik-choi]

변경사항에 대해 더 자세히 적어주시면 좋을 거 같아요!

[leejiwoo2002]

PR의 내용을 일부 추가하도록 하겠습니다

[leejiwoo2002]

디테일들 추가했습니다!