Improve homepage (#245)

* Improve how generators are listed on home

* Add some icons for generators

* Remove debug

* Refactor cachedFetch and use generated changelogs

* Add limit to how many changes are shown by default

* Add more generator icons

* Refactor cards

* Fix generator icons for light theme

* Add more worldgen icons

* Add remaining generator icons

* Refactor navigation and badges style

* Group on homepage for guides and tools

* Fix header button style

* Add versions and technical changelog to homepage

* Make it clear that not all changes could be documented

src/app/components/ToolGroup.tsx

@@ -0,0 +1,22 @@
+import type { ComponentChildren } from 'preact'
+import type { Icons } from './Icons.jsx'
+import type { Octicon } from './Octicon.jsx'
+import { ToolCard } from './ToolCard.jsx'
+
+interface Props {
+	title: string,
+	titleIcon?: keyof typeof Octicon | keyof typeof Icons,
+	link?: string,
+	children?: ComponentChildren,
+}
+export function ToolGroup({ title, titleIcon, link, children }: Props) {
+	return <div class="tool-group">
+		{link === undefined
+			? <div class="tool-card"><h3>{title}</h3></div>
+			: <ToolCard {...{ title, titleIcon, link}} />
+		}
+		{children && <div class="tool-body">
+			{children}
+		</div>}
+	</div>
+}