Fix: Use ${node_bin} for the node binary (#97)

With the latest version of lsp_utils a change was introduced [1] that allows using a locally
managed node runtime instead of the system one. For that to work, the "node" command
needs to use a variable.

[1] sublimelsp/lsp_utils@403345a

LSP-vue.sublime-settings

@@ -1,5 +1,5 @@
 {
-	"command": ["node", "${server_path}", "--stdio"],
+	"command": ["${node_bin}", "${server_path}", "--stdio"],
 	"languages": [
 		{
 			"languageId": "vue",

plugin.py

@@ -16,10 +16,6 @@ class LspVuePlugin(NpmClientHandler):
     server_directory = 'server'
     server_binary_path = os.path.join(server_directory, 'node_modules', 'vls', 'bin', 'vls')
 
-    @classmethod
-    def install_in_cache(cls) -> bool:
-        return False
-
     @classmethod
     def on_client_configuration_ready(cls, configuration: dict):
         view = sublime.active_window().active_view()