add new patch release process

Signed-off-by: Patrik Oldsberg <poldsberg@gmail.com>

.patches/create-pr-patch.js

@@ -0,0 +1,15 @@
+#!/usr/bin/env node
+
+const fs = require('fs');
+const path = require('path');
+
+const prNumber = process.argv[2];
+const description = process.argv.slice(3).join(' ');
+
+if (!prNumber || !description) {
+  console.error('Usage: yarn patch-pr <pr-number> <description>');
+  process.exit(1);
+}
+
+const patchFilePath = path.join(__dirname, `pr-${prNumber}.txt`);
+fs.writeFileSync(patchFilePath, description);