feat: comment form and subscriptions updates

[akellbl4]

• move components in their folders
• switch components to css modules
• compose old styles in single file
• switch theme based on class name added to body
• updates subscription block in comment-form
• updates token view for email subscription and resolves https://github.com/umputun/remark42/issues/1661

[github-actions[bot]]

size-limit report 📦

Path	Size
public/embed.mjs	2.03 KB (0%)
public/remark.mjs	73.52 KB (+0.07% 🔺)
public/remark.css	8.09 KB (-2.41% 🔽)
public/last-comments.mjs	35.73 KB (-0.02% 🔽)
public/last-comments.css	3.76 KB (-0.5% 🔽)
public/deleteme.mjs	12.07 KB (0%)
public/counter.mjs	751 B (0%)

[github-actions[bot]]

Pull Request Test Coverage Report for Build 7512288609

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.03%) to 84.822%

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Totals
Change from base Build 7495000583:	0.03%
Covered Lines:	5918
Relevant Lines:	6977

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💛 - Coveralls