Rename pyo3 directory to python

Also update the crate's name.

python/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "libloot_python"
+version = "0.26.0"
+edition = "2024"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+name = "loot"
+crate-type = ["cdylib"]
+
+[dependencies]
+libloot = { path = ".." }
+libloot-ffi-errors = { path = "../ffi-errors" }
+pyo3 = "0.24.0"
+pyo3-log = "0.12.2"