chore(assets): create new default set of assets

feat(assets): prepare assets before build

scripts/setup_assets.js

@@ -0,0 +1,37 @@
+/* eslint-disable */
+const { copy, remove, access } = require("fs-extra");
+const { exec: cexec } = require("child_process");
+const { resolve } = require("path");
+
+let target = process.env.REVOLT_SASS;
+let DEFAULT_DIRECTORY = "public/assets_default";
+let OUT_DIRECTORY = "public/assets";
+
+function exec(command) {
+    return new Promise((fulfil, reject) => {
+        cexec(command, (err, stdout, stderr) => {
+            if (err) {
+                reject(err);
+                return;
+            }
+
+            fulfil({ stdout, stderr });
+        });
+    });
+}
+
+(async () => {
+    try {
+        await access(OUT_DIRECTORY);
+        if (process.argv[2] === "--check") return;
+
+        await remove(OUT_DIRECTORY);
+    } catch (err) {}
+
+    if (target) {
+        await exec(`git clone ${target} ${OUT_DIRECTORY}`);
+        await exec(`rm -rf ${resolve(OUT_DIRECTORY, ".git")}`);
+    } else {
+        await copy(DEFAULT_DIRECTORY, OUT_DIRECTORY);
+    }
+})();