Added multiple components, added CodeMirror for body editor and added variable substitution for params and headers

src/lib/components/ui/tabs/tabs-content.svelte

@@ -0,0 +1,17 @@
+<script lang="ts">
+	import { Tabs as TabsPrimitive } from "bits-ui";
+	import { cn } from "$lib/utils.js";
+
+	let {
+		ref = $bindable(null),
+		class: className,
+		...restProps
+	}: TabsPrimitive.ContentProps = $props();
+</script>
+
+<TabsPrimitive.Content
+	bind:ref
+	data-slot="tabs-content"
+	class={cn("flex-1 outline-none", className)}
+	{...restProps}
+/>