License extension (#1174)

* License menu item should come from an extension #1141

Signed-off-by: Roman <ixrock@gmail.com>

* fix: expose `Util.openExternal` via extensions-api

Signed-off-by: Roman <ixrock@gmail.com>

* move LICENSE back to root

Signed-off-by: Roman <ixrock@gmail.com>

src/common/utils/index.ts

@@ -11,4 +11,4 @@ export * from "./getRandId"
 export * from "./splitArray"
 export * from "./saveToAppFiles"
 export * from "./singleton"
-export * from "./cloneJson"
+export * from "./openExternal"

src/common/utils/openExternal.ts

@@ -0,0 +1,6 @@
+// Opens a link in external browser
+import { shell } from "electron"
+
+export function openExternal(url: string) {
+  return shell.openExternal(url);
+}