fix: add ftl as a parser that can be enabled (#797)

This schema definition says that `ftl`is not a valid parser, but it has been added with the `fluent-vue` support. It is useful for custom frameworks that use plain fluent project.

Author: mrnossiom

package.json

@@ -849,7 +849,8 @@
               "ini",
               "po",
               "php",
-              "properties"
+              "properties",
+              "ftl"
             ]
           },
           "description": "%config.enabled_parsers%"