scala metals template is now consistent with command in installer.json

in scala/metals, isHttpEnabled is true by default

Author: tribbloid

src/main/resources/templates/lsp/metals/initializationOptions.json

@@ -0,0 +1,3 @@
+{
+  "isHttpEnabled": true
+}

src/main/resources/templates/lsp/metals/template.json

@@ -1,9 +1,12 @@
 {
   "id": "metals",
   "name": "Scala Language Server (Metals)",
+  "properties": {
+    "workingDir" : "$USER_HOME$/.lsp4ij/lsp/metals"
+  },
   "programArgs": {
-    "windows": "\"${BASE_DIR}/metals.bat\"",
-    "default": "\"${BASE_DIR}/metals\""
+    "windows": "\"${workingDir}/metals.bat\"",
+    "default": "\"${workingDir}/metals\""
   },
   "expandConfiguration": true,
   "fileTypeMappings": [