Script to add license preamble to each file. Also, does that. (#935)

* Add script to automatically add license to each file

* Add license preamble to each file.

* Fix existing preamble detection breaking due to line endings. Git :(

* Prevent license from being added to code with other licenses

scripts/schema.js

@@ -1,3 +1,21 @@
+/*
+	Fosscord: A FOSS re-implementation and extension of the Discord.com backend.
+	Copyright (C) 2023 Fosscord and Fosscord Contributors
+	
+	This program is free software: you can redistribute it and/or modify
+	it under the terms of the GNU Affero General Public License as published
+	by the Free Software Foundation, either version 3 of the License, or
+	(at your option) any later version.
+	
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU Affero General Public License for more details.
+	
+	You should have received a copy of the GNU Affero General Public License
+	along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+
 /*
 	Regenerates the `fosscord-server/assets/schemas.json` file, used for API/Gateway input validation.
 */
@@ -5,6 +23,7 @@
 const path = require("path");
 const fs = require("fs");
 const TJS = require("typescript-json-schema");
+const walk = require("./util/walk");
 const schemaPath = path.join(__dirname, "..", "assets", "schemas.json");
 
 const settings = {
@@ -98,20 +117,3 @@ function main() {
 }
 
 main();
-
-function walk(dir) {
-	var results = [];
-	var list = fs.readdirSync(dir);
-	list.forEach(function (file) {
-		file = dir + "/" + file;
-		var stat = fs.statSync(file);
-		if (stat && stat.isDirectory()) {
-			/* Recurse into a subdirectory */
-			results = results.concat(walk(file));
-		} else {
-			if (!file.endsWith(".ts")) return;
-			results.push(file);
-		}
-	});
-	return results;
-}