Refactor to Cargo Workspace (#129)

* Refactor project into a Cargo workspace with distinct packages

- Created a root `Cargo.toml` defining a workspace.
- Moved `src/types` and `src/utils` into a new `pwsp-lib` crate for shared logic.
- Split binaries into their own crates: `pwsp-daemon`, `pwsp-cli`, and `pwsp-gui`.
- Shifted all dependencies into `[workspace.dependencies]` for centralized version management.
- Updated import paths across all crates (e.g. from `pwsp::` to `pwsp_lib::`).
- Updated build scripts, GitHub actions, Flatpak manifest, and AUR PKGBUILD to support the new workspace structure.
- Ensured no core application logic was altered.

Co-authored-by: arabianq <55220741+arabianq@users.noreply.github.com>

* Fix cargo-deb build process in GitHub actions for workspace architecture

Co-authored-by: arabianq <55220741+arabianq@users.noreply.github.com>

* Fix cargo-deb asset discovery by using exact target/release paths

Co-authored-by: arabianq <55220741+arabianq@users.noreply.github.com>

* refactor deps in Cargo.toml files

* fix incorrect assets path

---------

Co-authored-by: google-labs-jules[bot] <161369871+google-labs-jules[bot]@users.noreply.github.com>

Cargo.lock

@@ -3279,28 +3279,45 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3d595e54a326bc53c1c197b32d295e14b169e3cfeaa8dc82b529f947fba6bcf5"
 
 [[package]]
-name = "pwsp"
+name = "pwsp-cli"
 version = "1.10.0"
 dependencies = [
  "anyhow",
- "async-trait",
  "clap",
- "dirs",
+ "pwsp-lib",
+ "serde_json",
+ "tokio",
+]
+
+[[package]]
+name = "pwsp-daemon"
+version = "1.10.0"
+dependencies = [
+ "anyhow",
+ "clap",
+ "pipewire",
+ "pwsp-lib",
+ "serde_json",
+ "tokio",
+]
+
+[[package]]
+name = "pwsp-gui"
+version = "1.10.0"
+dependencies = [
+ "anyhow",
  "eframe",
  "egui",
  "egui_dnd",
  "egui_extras",
  "egui_material_icons",
- "evdev",
  "itertools 0.14.0",
  "opener",
  "percent-encoding",
- "pipewire",
+ "pwsp-lib",
  "reqwest",
  "rfd",
- "rodio",
  "rust-i18n",
- "rustix 1.1.4",
  "serde",
  "serde_json",
  "sys-locale",
@@ -3308,6 +3325,25 @@ dependencies = [
  "tokio",
 ]
 
+[[package]]
+name = "pwsp-lib"
+version = "1.10.0"
+dependencies = [
+ "anyhow",
+ "async-trait",
+ "dirs",
+ "egui",
+ "evdev",
+ "itertools 0.14.0",
+ "pipewire",
+ "reqwest",
+ "rodio",
+ "rustix 1.1.4",
+ "serde",
+ "serde_json",
+ "tokio",
+]
+
 [[package]]
 name = "pxfm"
 version = "0.1.29"