faith: add bilingual routes /glaube ↔ /faith

Add language toggle support for faith pages similar to recipes.
Routes now work in both German and English:
- /glaube ↔ /faith
- /glaube/gebete ↔ /faith/prayers
- /glaube/rosenkranz ↔ /faith/rosary
- /glaube/angelus ↔ /faith/angelus

src/routes/[faithLang=faithLang]/[prayers=prayersLang]/Gebet.svelte

@@ -0,0 +1,52 @@
+<script>
+	export let is_bilingue;
+	export let name;
+</script>
+<style>
+div.gebet{
+	text-align: center;
+	font-size: 1.25em;
+}
+:global(.gebet v){
+	margin:0;
+	display: block;
+}
+:global(.gebet v:lang(la)) {
+	color: var(--nord6);
+}
+:global(.bilingue v:lang(de)){
+	color: grey;
+}
+.gebet_wrapper h2{
+	text-align: center;
+	padding-bottom: 0.5em;
+}
+
+:global(.gebet i){
+	font-style: normal;
+	color: var(--nord11);
+	font-weight: 900;
+}
+.gebet_wrapper{
+	padding: 1em;
+	background-color: var(--accent-dark);
+	box-shadow: 0 0 1em black;
+	max-width: 600px;
+}
+@media(prefers-color-scheme: light){
+	.gebet_wrapper{
+		background-color: var(--accent-light);
+	}
+	:global(.gebet v:lang(la)){
+		color: black;
+	}
+}
+</style>
+
+<div class="gebet_wrapper">
+	<h2>{name}</h2>
+	<slot name="intro"></slot>
+	<div class="gebet" class:bilingue={is_bilingue}>
+		<slot></slot>
+	</div>
+</div>