docs: migrate UI docs (#13245)

* docs: create a new UI docs project (#13233)

* docs: create a new UI docs project

* fix installation errors

* docs: migrate UI docs content to new project (#13241)

* Fix content

* added examples for some components

* finish adding examples

* lint fix

* fix build errors

* delete empty files

* path fixes + refactor

* fix build error

www/apps/ui/specs/examples/label-with-inputs.tsx

@@ -0,0 +1,38 @@
+import { Label, Input } from "@medusajs/ui"
+import { Textarea, RadioGroup } from "@medusajs/ui"
+
+export default function LabelWithInputs() {
+  return (
+    <form className="flex flex-col gap-6">
+      <div className="flex flex-col gap-1">
+        <Label htmlFor="text-input">Text Input</Label>
+        <Input id="text-input" placeholder="Enter text" />
+      </div>
+      <div className="flex flex-col gap-1">
+        <Label htmlFor="checkbox-input">Checkbox</Label>
+        <Input id="checkbox-input" type="checkbox" />
+      </div>
+      <div className="flex flex-col gap-1">
+        <Label htmlFor="textarea-input">Textarea</Label>
+        <Textarea
+          id="textarea-input"
+          placeholder="Enter details"
+          className="border rounded p-2"
+        />
+      </div>
+      <div className="flex flex-col gap-1">
+        <Label>Radio Group</Label>
+        <RadioGroup defaultValue="option-1" className="flex gap-4">
+          <div className="flex items-center gap-1">
+            <RadioGroup.Item id="radio-1" value="option-1" />
+            <Label htmlFor="radio-1">Option 1</Label>
+          </div>
+          <div className="flex items-center gap-1">
+            <RadioGroup.Item id="radio-2" value="option-2" />
+            <Label htmlFor="radio-2">Option 2</Label>
+          </div>
+        </RadioGroup>
+      </div>
+    </form>
+  )
+}