refactor(layouts): extract independent komorebi-layouts crate

This commit moves layout-related code into a new workspace crate
komorebi-layouts, with the intention of re-using it all in komorebi for
Mac instead of maintaining two separate implementations.

komorebi-layouts/Cargo.toml

@@ -0,0 +1,21 @@
+[package]
+name = "komorebi-layouts"
+version = "0.1.40"
+edition = "2024"
+
+[dependencies]
+clap = { workspace = true }
+color-eyre = { workspace = true }
+serde = { workspace = true }
+serde_json = { workspace = true }
+serde_yaml = { workspace = true }
+strum = { workspace = true }
+tracing = { workspace = true }
+
+# Optional dependencies
+schemars = { workspace = true, optional = true }
+windows = { workspace = true, optional = true }
+
+[features]
+schemars = ["dep:schemars"]
+win32 = ["dep:windows"]