Add import_map.json and use it for remote script execution

import_map.json

@@ -0,0 +1,7 @@
+{
+  "imports": {
+    "@std/cli": "jsr:@std/cli@^1.0.0",
+    "@std/fs": "jsr:@std/fs@^1.0.0",
+    "@std/path": "jsr:@std/path@^1.0.0"
+  }
+}

loader.ts

@@ -365,7 +365,14 @@ scripts() {
     return 127;
   fi
 
-  deno run --allow-all "$url" "$@";
+  local import_map_url
+  if [[ "$ref" == v* ]]; then
+    import_map_url="${BASE_RAW}/tag/$ref/import_map.json"
+  else
+    import_map_url="${BASE_RAW}/branch/$ref/import_map.json"
+  fi
+
+  deno run --allow-all --import-map="$import_map_url" "$url" "$@";
 }
 
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