feat: Allow rich text editing of Markdown

[evadecker]

What changed?

• Add a new RichTextEditor component using https://mdxeditor.dev/
• Remove existing Write / Preview tabs for rich text within the admin
• Add .prose styles using tailwindcss-typography
• Fix some color styles for table headings and select dropdowns

Why?

Using a rich text editor to make changes to Markdown is more user-friendly than requiring users to write in raw markdown.

How was this change made?

• Installed the package
• Created a new RichTextEditor component which imports the package along with select plugins and styles

How was this tested?

Manual testing.

Anything else?

Created two follow-up issues:

• Disable setting underlines in RichTextEditor #46
• Add support for links in RichTextEditor #47

[changeset-bot]

🦋 Changeset detected

Latest commit: 63b2679

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

This PR includes changesets to release 1 package

Name	Type
namesake	Minor

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[github-actions]

Coverage Report

Status	Category	Percentage	Covered / Total
🔵	Lines	4.21% ⬇️ -0.04%	117 / 2774
🔵	Statements	4.21% ⬇️ -0.04%	117 / 2774
🔵	Functions	1.36% ⬇️ -0.02%	1 / 73
🔵	Branches	4.41% ⬇️ -0.06%	3 / 68

File Coverage

File	Stmts	% Branch	% Funcs	% Lines	Uncovered Lines
Changed Files
src/components/shared/Card.tsx	0%	0%	0%	0%	1, 8-13, 16, 19
src/components/shared/RichTextEditor.tsx	0%	0%	0%	0%	1, 13-15, 19-20, 22-40, 43-44, 47
src/components/shared/Select.tsx	0%	0%	0%	0%	1, 11-14, 19-20, 22-32, 43-56, 59-64, 67-72, 74, 79, 81-83, 85-86, 88-89
src/components/shared/Table.tsx	0%	0%	0%	0%	1, 23-26, 28-31, 34, 36-39, 41-44, 46-52, 55-65, 67-70, 76, 82, 84-86, 88-93, 97-102, 104, 107, 110, 112-115, 117-123, 125-129, 132-134, 137, 140, 142-146, 148-150, 152-154
src/components/shared/index.ts	0%	0%	0%	0%	1-19, 26-41, 49-57
src/routes/admin/quests/$questId.tsx	0%	0%	0%	0%	1-5, 15, 17-19, 21-29, 31-33, 35-38, 40-45, 47-51, 53-62, 70, 73-74, 78-85, 87-89, 92, 102

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