chore: improve the pnpm add-function command

Include a boilerplate comment block with @see and @example tags filled in.

benchmarks/test/test.bench.ts

@@ -0,0 +1,9 @@
+import * as _ from 'radashi'
+import { bench } from 'vitest'
+
+describe('test', () => {
+  bench('with no arguments', () => {
+    _.test()
+  })
+})
+

docs/test/test.mdx

@@ -0,0 +1,14 @@
+---
+title: test
+description: Test
+---
+
+### Usage
+
+Does a thing. Returns a value.
+
+```ts
+import * as _ from 'radashi'
+
+_.test()
+```

scripts/add-function.sh

@@ -53,7 +53,7 @@ fi
 
 if [ ! -f "$SRC_FILE" ]; then
   mkdir -p "$SRC_DIR"
-  echo -e "export function $FUNC_NAME(): void {}\n" > "$SRC_FILE"
+  echo -e "/**\n * Does a thing.\n *\n * @see https://radashi-org.github.io/reference/$GROUP_NAME/$FUNC_NAME\n * @example\n * \`\`\`ts\n * $FUNC_NAME()\n * \`\`\`\n */\nexport function $FUNC_NAME(): void {}\n" > "$SRC_FILE"
 else
   echo "Warning: $SRC_FILE already exists. Skipping."
 fi

src/test/test.ts

@@ -0,0 +1,12 @@
+/**
+ * Does a thing.
+ *
+ * @see https://radashi-org.github.io/reference/test/test
+ * @example
+ *
+ * ```ts
+ * test()
+ * ```
+ */
+export function test(): void {}
+

tests/test/test.test.ts

@@ -0,0 +1,8 @@
+import * as _ from 'radashi'
+
+describe('test', () => {
+  test('does a thing', () => {
+    expect(_.test()).toBe(undefined)
+  })
+})
+