feat: restructure k-launcher workspace and add core functionality

- Updated Cargo.toml to include a new k-launcher crate and reorganized workspace members.
- Introduced a README.md file detailing the project philosophy, architecture, and technical specifications.
- Implemented a new Kernel struct in k-launcher-kernel for managing plugins and search functionality.
- Created a Plugin trait for plugins to implement, allowing for asynchronous search operations.
- Developed k-launcher-ui with an Iced-based UI for user interaction, including search input and result display.
- Added AppsPlugin and CalcPlugin to handle application launching and basic calculations, respectively.
- Established a theme module for UI styling, focusing on an Aero aesthetic.
- Removed unnecessary main.rs files from plugin crates, streamlining the project structure.

crates/k-launcher-os-bridge/src/lib.rs

@@ -1,14 +1,20 @@
-pub fn add(left: u64, right: u64) -> u64 {
-    left + right
+/// Configuration for the launcher window.
+pub struct WindowConfig {
+    pub width: f32,
+    pub height: f32,
+    pub decorations: bool,
+    pub transparent: bool,
+    pub resizable: bool,
 }
 
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn it_works() {
-        let result = add(2, 2);
-        assert_eq!(result, 4);
+impl WindowConfig {
+    pub fn launcher() -> Self {
+        Self {
+            width: 600.0,
+            height: 400.0,
+            decorations: false,
+            transparent: true,
+            resizable: false,
+        }
     }
 }