Add arbitrary module namespace identfier names

Author: caugner

javascript/statements.json

@@ -1365,6 +1365,48 @@
             }
           }
         },
+        "arbitrary_module_namespace_identifier_names": {
+          "__compat": {
+            "tags": [
+              "web-features:js-modules"
+            ],
+            "support": {
+              "chrome": {
+                "version_added": "88"
+              },
+              "chrome_android": "mirror",
+              "deno": {
+                "version_added": "1.6"
+              },
+              "edge": "mirror",
+              "firefox": {
+                "version_added": "87"
+              },
+              "firefox_android": "mirror",
+              "ie": {
+                "version_added": false
+              },
+              "nodejs": {
+                "version_added": "16.0.0"
+              },
+              "oculus": "mirror",
+              "opera": "mirror",
+              "opera_android": "mirror",
+              "safari": {
+                "version_added": "14.1"
+              },
+              "safari_ios": "mirror",
+              "samsunginternet_android": "mirror",
+              "webview_android": "mirror",
+              "webview_ios": "mirror"
+            },
+            "status": {
+              "experimental": false,
+              "standard_track": true,
+              "deprecated": false
+            }
+          }
+        },
         "import_assertions": {
           "__compat": {
             "description": "Import attributes with `assert` syntax (formerly import assertions)",