Adding support for cjs and mjs (#3)

* added support for mjs and cjs

* Update src/symbol-icon-theme.json

Fixing additional variants redefinition

Co-authored-by: Miguel Solorio <miguel.solorio@microsoft.com>

Co-authored-by: Miguel Solorio <miguel.solorio@microsoft.com>

src/symbol-icon-theme.json

@@ -48,6 +48,8 @@
     "svg": { "iconPath": "./icons/files/svg.svg" },
     "vue": { "iconPath": "./icons/files/vue.svg" },
     "js": { "iconPath": "./icons/files/js.svg" },
+    "mjs": { "iconPath": "./icons/files/js.svg" },
+    "cjs": { "iconPath": "./icons/files/js.svg" },
     "ts": { "iconPath": "./icons/files/ts.svg" },
     "dts": { "iconPath": "./icons/files/dts.svg" },
     "robot": { "iconPath": "./icons/files/robot.svg" },
@@ -279,6 +281,8 @@
     "css": "brackets-sky",
     "test": "code-orange",
     "js": "js",
+    "mjs": "js",
+    "cjs": "js",
     "ts": "ts",
     "json": "brackets-yellow",
     "html": "code-orange",