Create modules.ts

#1

`virtual:astro-svgs` 模块支持

src/modules.ts

@@ -0,0 +1,18 @@
+import type { InjectedType } from "astro";
+import { type SVGsOptions, name } from ".";
+import { compose } from "./core";
+
+export async function virtual(opts: SVGsOptions): Promise<InjectedType> {
+  let filename = "types.d.ts";
+
+  const { symbolIds } = await compose(opts);
+  const SymbolId =
+    symbolIds.length > 0
+      ? symbolIds.map((id) => `\t| '${id}'`).join("\n\t")
+      : "\t| null"; // Fallback for empty symbolIds
+
+  const content =
+    `declare module 'virtual:${name}' {\n\texport type SymbolId =\n\t${SymbolId};\n\texport const file: string;\n}`.trim();
+
+  return { filename, content };
+}