refactor tauri-cli (#14836)

* refactor(tauri-cli): use OsString where possible

* refactor(tauri-cli): remove needless scoping blocks

* refactor(tauri-cli): make return type concrete

* refactor(tauri-cli): use ?

* refactor(tauri-cli): coerce later to trait object

* refactor(tauri-cli): remove clone

* refactor(tauri-cli): make better use of static OnceLock

* fix(tauri-cli): upgrade atomics to SeqCst

* Add change file

* Update .changes/change-pr-14836.md

Co-authored-by: Tony <68118705+Legend-Master@users.noreply.github.com>