fix: fix resolving and respect external rollup option

Author: Loïc Mangeonjean

packages/rollup-plugin-import-meta-assets/src/rollup-plugin-import-meta-assets.js

@@ -161,11 +161,19 @@ ${`    default: return new Promise(function(resolve, reject) {
           if (importMetaUrlType === 'static') {
             const absoluteScriptDir = path.dirname(id);
             const relativeAssetPath = getRelativeAssetPath(node);
+            const resolved = await this.resolve(relativeAssetPath, id)
+            if (resolved == null) {
+              this.error(`Unable to resolve "${relativeAssetPath}" from "${id}"`)
+              return
+            }
+            if (resolved.external) {
+              return
+            }
             const absoluteAssetPath = path.resolve(absoluteScriptDir, relativeAssetPath);
             const assetName = path.basename(absoluteAssetPath);
 
             try {
-              const assetContents = await fs.promises.readFile(absoluteAssetPath);
+              const assetContents = await fs.promises.readFile(resolved.id);
               const transformedAssetContents =
                 transform != null
                   ? await transform(assetContents, absoluteAssetPath)