feat: add text adapter

[yeonjuan]

Checklist

• Addresses an existing open issue: fixes #000

Description

[codecov]

Codecov Report

❌ Patch coverage is 2.85714% with 68 lines in your changes missing coverage. Please review.
✅ Project coverage is 91.97%. Comparing base (60a161c) to head (2a368f2).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
...elte/lib/adapters/text/svelte-mustache-tag-text.js	0.00%	12 Missing and 5 partials ⚠️
.../eslint-plugin-svelte/lib/adapters/text/literal.js	0.00%	12 Missing and 2 partials ⚠️
...lugin-svelte/lib/adapters/text/template-literal.js	0.00%	12 Missing and 1 partial ⚠️
...int-plugin-svelte/lib/adapters/text/svelte-text.js	0.00%	8 Missing ⚠️
packages/eslint-plugin/lib/adapters/text.js	11.11%	8 Missing ⚠️
.../eslint-plugin-svelte/lib/adapters/text/factory.js	0.00%	5 Missing and 1 partial ⚠️
packages/eslint-plugin/lib/adapters/factory.js	33.33%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #562      +/-   ##
==========================================
- Coverage   93.55%   91.97%   -1.58%     
==========================================
  Files         168      174       +6     
  Lines        3969     4039      +70     
  Branches      906      917      +11     
==========================================
+ Hits         3713     3715       +2     
- Misses        235      294      +59     
- Partials       21       30       +9     

Flag	Coverage Δ
unittest	91.97% <2.85%> (-1.58%)	⬇️

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

Files with missing lines	Coverage Δ
...s/eslint-plugin-svelte/lib/constants/node-types.js	100.00% <ø> (ø)
packages/eslint-plugin/lib/adapters/factory.js	62.50% <33.33%> (-6.74%)	⬇️
.../eslint-plugin-svelte/lib/adapters/text/factory.js	0.00% <0.00%> (ø)
...int-plugin-svelte/lib/adapters/text/svelte-text.js	0.00% <0.00%> (ø)
packages/eslint-plugin/lib/adapters/text.js	11.11% <11.11%> (ø)
...lugin-svelte/lib/adapters/text/template-literal.js	0.00% <0.00%> (ø)
.../eslint-plugin-svelte/lib/adapters/text/literal.js	0.00% <0.00%> (ø)
...elte/lib/adapters/text/svelte-mustache-tag-text.js	0.00% <0.00%> (ø)

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