refactor(rust): cleanup path handling

- Avoids unnecessary string allocation when tracing paths
- Replaces `mut path & path.push()` with `path.join()`
- Avoids unncessary cloning of paths where applicable
- Use `dunce` crate to remove `UNC` prefix
- Improve performance of resolving `~` by avoiding unnecessary string allocations
- Resolve `~`, `$Env:USERPROFILE` and `$HOME` consistenly between different code paths
- Use `PathBuf` instead of `String` for paths in CLI args

I may have missed a couple of places but I think I covered 90% of path handling in the codebase

komorebi-core/Cargo.toml

@@ -7,10 +7,12 @@ edition = "2021"
 
 [dependencies]
 clap = { version = "4", features = ["derive"] }
-color-eyre = "0.6"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 serde_yaml = "0.9"
 strum = { version = "0.25", features = ["derive"] }
 schemars = "0.8"
+color-eyre = { workspace = true }
 windows = { workspace = true }
+dunce = { workspace = true }
+dirs = { workspace = true }