feat: detect and warn if running as root

Cargo.lock

@@ -1453,6 +1453,15 @@ version = "2.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f518f335dce6725a761382244631d86cf0ccb2863413590b31338feb467f9c3"
 
+[[package]]
+name = "is_elevated"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5299060ff5db63e788015dcb9525ad9b84f4fd9717ed2cbdeba5018cbf42f9b5"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "is_terminal_polyfill"
 version = "1.70.0"
@@ -2883,6 +2892,7 @@ dependencies = [
  "glob",
  "home",
  "indexmap 2.9.0",
+ "is_elevated",
  "jetbrains-toolbox-updater",
  "merge",
  "nix 0.29.0",