Packages: Reimplement ESLint config as plugin (#12763)

* Packages: Move eslint-config to eslint-plugin

(Fails pre-commit, but in effort to ensure history preservation)

* eslint-plugin: Add npmrc to avoid package-lock.json

* Framework: Update path references for eslint-config to -plugin

* eslint-plugin: Reimplement ESLint config as plugin

* eslint-plugin: Unmark as private

* eslint-plugin: Undocument custom ruleset

Author: aduth

.eslintrc.js

@@ -19,7 +19,7 @@ const majorMinorRegExp = escapeRegExp( version.replace( /\.\d+$/, '' ) ) + '(\\.
 module.exports = {
 	root: true,
 	extends: [
-		'@wordpress/eslint-config',
+		'plugin:@wordpress/eslint-plugin/recommended',
 		'plugin:jest/recommended',
 	],
 	rules: {

docs/manifest.json

@@ -498,9 +498,9 @@
 		"parent": "packages"
 	},
 	{
-		"title": "@wordpress/eslint-config",
-		"slug": "packages-eslint-config",
-		"markdown_source": "https://raw.githubusercontent.com/WordPress/gutenberg/master/packages/eslint-config/README.md",
+		"title": "@wordpress/eslint-plugin",
+		"slug": "packages-eslint-plugin",
+		"markdown_source": "https://raw.githubusercontent.com/WordPress/gutenberg/master/packages/eslint-plugin/README.md",
 		"parent": "packages"
 	},
 	{

package-lock.json

@@ -60,7 +60,7 @@
 		"@wordpress/babel-preset-default": "file:packages/babel-preset-default",
 		"@wordpress/browserslist-config": "file:packages/browserslist-config",
 		"@wordpress/custom-templated-path-webpack-plugin": "file:packages/custom-templated-path-webpack-plugin",
-		"@wordpress/eslint-config": "file:packages/eslint-config",
+		"@wordpress/eslint-plugin": "file:packages/eslint-plugin",
 		"@wordpress/jest-console": "file:packages/jest-console",
 		"@wordpress/jest-preset-default": "file:packages/jest-preset-default",
 		"@wordpress/library-export-default-webpack-plugin": "file:packages/library-export-default-webpack-plugin",

package.json

@@ -0,0 +1 @@
+package-lock=false