add = as trigger character for completion

Author: zth

server/src/server.ts

@@ -1111,7 +1111,7 @@ function onMessage(msg: p.Message) {
           codeActionProvider: true,
           renameProvider: { prepareProvider: true },
           documentSymbolProvider: true,
-          completionProvider: { triggerCharacters: [".", ">", "@", "~", '"'] },
+          completionProvider: { triggerCharacters: [".", ">", "@", "~", '"', "="] },
           semanticTokensProvider: {
             legend: {
               tokenTypes: [