feat(fs): improved API (#751)

* feat(fs): improved API

* fmt

* fix unix builds

* again

* clippy

* clippy

* fix import in docs examples

* fmt, clippy

* Update linux.rs

* add API for watch

* fix with `watcher` feature flag

* use baseDir for all commands

* do not export close function

* fix build

* organize and address review comments

* fmt

* generated files

* rename FsFile to FileHandle, move APIs and docs

* extend example

* extend `Resource`

* actually extend it

---------

Co-authored-by: FabianLars <fabianlars@fabianlars.de>
Co-authored-by: Lucas Nogueira <lucas@tauri.studio>

.changes/fs-improved-apis.md

@@ -0,0 +1,6 @@
+---
+"fs": "patch"
+"fs-js": "patch"
+---
+
+The `fs` plugin received a major overhaul to add new APIs and changed existing APIs to be closer to Node.js and Deno APIs.