refactor: move firmware workspace under firmware

firmware/libs/kaptan-navigation/Cargo.toml

@@ -0,0 +1,23 @@
+[package]
+name = "kaptan-navigation"
+edition.workspace = true
+license.workspace = true
+rust-version.workspace = true
+version.workspace = true
+
+[lints]
+workspace = true
+
+[features]
+default = []
+# Enables the provisional raw-rate estimator used only by the internal SITL
+# executable. It is not part of a board build.
+sitl = ["dep:kaptan-sensor"]
+[dependencies]
+kaptan-log = { path = "../kaptan-log" }
+kaptan-math = { path = "../kaptan-math" }
+kaptan-sensor = { path = "../kaptan-sensor", optional = true }
+kaptan-time = { path = "../kaptan-time" }
+
+[dev-dependencies]
+kaptan-sensor = { path = "../kaptan-sensor" }