chore(web): add empty StoryPanel

[isoppp]

Overview

Add an empty story panel and set common colors

What I've done

What I haven't done

This component will be difficult to maintain storybook so I didn't create it.

How I tested

see editor in local

Which point I want you to review particularly

Memo

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[codecov]

Codecov Report

Merging #541 (2ec481a) into main (591800f) will decrease coverage by 0.01%.
The diff coverage is 3.70%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #541      +/-   ##
==========================================
- Coverage   25.62%   25.61%   -0.01%     
==========================================
  Files        1360     1361       +1     
  Lines      154550   154563      +13     
  Branches     3557     3558       +1     
==========================================
- Hits        39599    39596       -3     
- Misses     113799   113815      +16     
  Partials     1152     1152              

Flag	Coverage Δ
web	22.84% <3.70%> (-0.01%)	⬇️
web-beta	22.84% <3.70%> (-0.01%)	⬇️
web-classic	22.84% <3.70%> (-0.01%)	⬇️
web-utils	22.84% <3.70%> (-0.01%)	⬇️

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

Impacted Files	Coverage Δ
...ures/Editor/Tabs/Storytelling/StoryPanel/index.tsx	0.00% <0.00%> (ø)
web/src/beta/features/Editor/index.tsx	0.00% <0.00%> (ø)
web/src/services/theme/reearthTheme/types.ts	0.00% <0.00%> (ø)
...eb/src/services/theme/reearthTheme/common/index.ts	100.00% <100.00%> (ø)