Add mhtml extension support.

Update efsw.

bin/assets/plugins/formatters.json

@@ -8,7 +8,7 @@
   "formatters": [
     {
       "language": ["javascript", "typescript", "jsx", "tsx", "html"],
-      "file_patterns": ["%.js$", "%.ts$", "%.jsx$", "%.tsx$", "%.html?$"],
+      "file_patterns": ["%.js$", "%.ts$", "%.jsx$", "%.tsx$", "%.[mp]?html?$"],
       "command": "prettier $FILENAME",
       "url": "https://prettier.io"
     },

bin/assets/plugins/lspclient.json

@@ -181,7 +181,7 @@
       "name": "emmet-language-server",
       "url": "https://github.com/olrtg/emmet-language-server",
       "command": "emmet-language-server --stdio",
-      "file_patterns": ["%.htm", "%.html"],
+      "file_patterns": ["%.[mp]?html?"],
       "rootIndicationFileNames": [".git"],
       "initializationOptions": {
         "showSuggestionsAsSnippets": true

src/eepp/ui/doc/languages/html.cpp

@@ -9,7 +9,7 @@ void addHTML() {
 		->add(
 
 			{ "HTML",
-			  { "%.html?$", "%.phtml", "%.handlebars" },
+			  { "%.[mp]?html?$", "%.handlebars" },
 			  {
 				  { { "<%s*[sS][cC][rR][iI][pP][tT]%s+[tT][yY][pP][eE]%s*=%s*['\"]%a+/"
 					  "[jJ][aA][vV][aA][sS][cC][rR][iI][pP][tT]['\"]%s*>",