Add @babel/eslint-plugin-development-internal (#11376)

* Add @babel/eslint-plugin-internal

* Add dry-error-messages rule

* Address feedback

* Enable new rule

* fix author field

* Fix errors

* Add readme

* Add example configuration

* Handle directories

* run make bootstrap

* More updates!

* Fix errors

* Update tests

* Fix CI race condition

packages/babel-parser/src/plugins/flow.js

@@ -2,6 +2,9 @@
 
 /*:: declare var invariant; */
 
+// Error messages are colocated with the plugin.
+/* eslint-disable @babel/development-internal/dry-error-messages */
+
 import type Parser from "../parser";
 import { types as tt, type TokenType } from "../tokenizer/types";
 import * as N from "../types";
@@ -473,6 +476,7 @@ export default (superClass: Class<Parser>): Class<Parser> =>
         ) {
           const label = this.state.value;
           const suggestion = exportSuggestions[label];
+
           throw this.raise(
             this.state.start,
             FlowErrors.UnsupportedDeclareExportKind,

packages/babel-parser/src/plugins/jsx/index.js

@@ -1,5 +1,8 @@
 // @flow
 
+// Error messages are colocated with the plugin.
+/* eslint-disable @babel/development-internal/dry-error-messages */
+
 import * as charCodes from "charcodes";
 
 import XHTMLEntities from "./xhtml";

packages/babel-parser/src/plugins/typescript/index.js

@@ -2,6 +2,9 @@
 
 /*:: declare var invariant; */
 
+// Error messages are colocated with the plugin.
+/* eslint-disable @babel/development-internal/dry-error-messages */
+
 import type { TokenType } from "../../tokenizer/types";
 import type State from "../../tokenizer/state";
 import { types as tt } from "../../tokenizer/types";