feat(package.json): add activation events for langs - #356 (#379)

Author: gigalasr

package.json

@@ -28,7 +28,12 @@
     "R",
     "R Markdown"
   ],
-  "activationEvents": [],
+  "activationEvents": [
+    "onLanguage:r",
+    "onLanguage:rmd",
+    "onLanguage:qmd",
+    "onLanguage:ipynb"
+  ],
   "main": "./dist/node/extension.js",
   "browser": "./dist/web/extension.js",
   "contributes": {
@@ -829,4 +834,4 @@
       "tsdoc/syntax": "off"
     }
   }
-}
+}