feat: add plugin packing, signing, pinned trust and tmxplug bundling

src/backend/plugins/paths.ts

@@ -15,6 +15,14 @@ export function getPluginsDir(): string {
   return path.join(process.env.DATA_DIR || "./db/data", "plugins");
 }
 
+/**
+ * Where user .tmxplug files are unpacked. A dot directory inside the user
+ * plugins dir, which the loader's directory scan skips.
+ */
+export function getUnpackedPluginsDir(): string {
+  return path.join(getPluginsDir(), ".unpacked");
+}
+
 /**
  * Where the plugins that ship with Termix live.
  *