Added support for record and tuple syntax. (#10865)

* Added support for record and tuple syntax.

This commit adds support for both the hash #{} and bar {||}
syntaxes to babel-parser, as well as adds the supporting
babel-plugin-syntax-record-and-tuple plugin to enable support
for the syntax. Does not include any transform for records and
tuples.

* typo

* added check to ensure recordAndTuple in babel-parser

* switched to syntaxType option instead of explicit entries for each record and tuple type

* switched to using recordAndTupleSyntaxType for generator options instead of adding to node

* added tests for generator option recordAndTupleSyntaxType

* added test for record and tuple bar syntax with flow typings

* added tests for invalid/missing recordAndTuple syntaxType parser option

* fixed flowcheck errors

* fix merge with class privates in tokenizer

* Update packages/babel-parser/src/types.js

Co-Authored-By: Nicolò Ribaudo <nicolo.ribaudo@gmail.com>

* improved recordAndTuple generator error message, added tests for invalid,missing options

* updated error messages for invalid parser syntaxType option

* updated error message

* added better error messages for when the recordAndTuple syntaxType is doesn't match the syntax used

* updated record and tuple support to use new error message templates

* added recordAndTuple to missing plugin helpers

* Fix linting

Co-authored-by: Nicolò Ribaudo <nicolo.ribaudo@gmail.com>

packages/babel-plugin-syntax-record-and-tuple/src/index.js

@@ -0,0 +1,18 @@
+import { declare } from "@babel/helper-plugin-utils";
+
+export default declare((api, options) => {
+  api.assertVersion(7);
+
+  return {
+    name: "syntax-record-and-tuple",
+
+    manipulateOptions(opts, parserOpts) {
+      opts.generatorOpts.recordAndTupleSyntaxType = options.syntaxType;
+
+      parserOpts.plugins.push([
+        "recordAndTuple",
+        { syntaxType: options.syntaxType },
+      ]);
+    },
+  };
+});