Restore extensions in core (#114921)

* bring back grammar extensions

* fix hygiene

* Revert "pull themes from the marketplace"

This reverts commit 0738f76dac.

extensions/coffeescript/.vscodeignore

@@ -0,0 +1,2 @@
+test/**
+cgmanifest.json

extensions/coffeescript/cgmanifest.json

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+{
+	"registrations": [
+		{
+			"component": {
+				"type": "git",
+				"git": {
+					"name": "atom/language-coffee-script",
+					"repositoryUrl": "https://github.com/atom/language-coffee-script",
+					"commitHash": "0f6db9143663e18b1ad00667820f46747dba495e"
+				}
+			},
+			"license": "MIT",
+			"description": "The file syntaxes/coffeescript.tmLanguage.json was derived from the Atom package https://github.com/atom/language-coffee-script which was originally converted from the TextMate bundle https://github.com/jashkenas/coffee-script-tmbundle.",
+			"version": "0.49.3"
+		}
+	],
+	"version": 1
+}

extensions/coffeescript/language-configuration.json

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+{
+	"comments": {
+		"lineComment": "#",
+		"blockComment": [ "###", "###" ]
+	},
+	"brackets": [
+		["{", "}"],
+		["[", "]"],
+		["(", ")"]
+	],
+	"autoClosingPairs": [
+		["{", "}"],
+		["[", "]"],
+		["(", ")"],
+		{ "open": "\"", "close": "\"", "notIn": ["string"] },
+		{ "open": "'", "close": "'", "notIn": ["string"] }
+	],
+	"surroundingPairs": [
+		["{", "}"],
+		["[", "]"],
+		["(", ")"],
+		["\"", "\""],
+		["'", "'"],
+		[" ", " "]
+	],
+	"folding": {
+		"offSide": true,
+		"markers": {
+			"start": "^\\s*#region\\b",
+			"end": "^\\s*#endregion\\b"
+		}
+	}
+}

extensions/coffeescript/package.json

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+{
+	"name": "coffeescript",
+	"displayName": "%displayName%",
+	"description": "%description%",
+	"version": "1.0.0",
+	"publisher": "vscode",
+	"license": "MIT",
+	"engines": { "vscode": "*" },
+	"scripts": {
+		"update-grammar": "node ../../build/npm/update-grammar.js atom/language-coffee-script grammars/coffeescript.cson ./syntaxes/coffeescript.tmLanguage.json"
+	},
+	"contributes": {
+		"languages": [{
+			"id": "coffeescript",
+			"extensions": [ ".coffee", ".cson", ".iced" ],
+			"aliases": [ "CoffeeScript", "coffeescript", "coffee" ],
+			"configuration": "./language-configuration.json"
+		}],
+		"grammars": [{
+			"language": "coffeescript",
+			"scopeName": "source.coffee",
+			"path": "./syntaxes/coffeescript.tmLanguage.json"
+		}],
+		"breakpoints": [
+			{
+				"language": "coffeescript"
+			}
+		],
+		"snippets": [{
+			"language": "coffeescript",
+			"path": "./snippets/coffeescript.code-snippets"
+		}]
+	}
+}

extensions/coffeescript/package.nls.json

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+{
+	"displayName": "CoffeeScript Language Basics",
+	"description": "Provides snippets, syntax highlighting, bracket matching and folding in CoffeeScript files."
+}

extensions/coffeescript/snippets/coffeescript.code-snippets

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+{
+	"Region Start": {
+		"prefix": "#region",
+		"body": [
+			"#region"
+		],
+		"description": "Folding Region Start"
+	},
+	"Region End": {
+		"prefix": "#endregion",
+		"body": [
+			"#endregion"
+		],
+		"description": "Folding Region End"
+	}
+}