Initial commit: apt-wrapper - Simple APT transaction wrapper

- Core transaction API with add_package, resolve, commit, rollback
- Version tracking for upgrades/downgrades
- Simple package info with FFI conversion functions
- Comprehensive error handling
- Basic test suite
- Clean, minimal implementation (~326 lines total)

Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "apt-wrapper"
+version = "0.1.0"
+edition = "2021"
+authors = ["apt-ostree team"]
+description = "A simple DNF-like API wrapper around APT for apt-ostree"
+license = "MIT"
+repository = "https://github.com/apt-ostree/apt-wrapper"
+keywords = ["apt", "package-management", "debian", "ubuntu"]
+categories = ["os::linux-apis", "development-tools::build-utils"]
+
+# This is part of the apt-ostree workspace
+
+[dependencies]
+anyhow = "1.0"
+thiserror = "1.0"
+
+[dev-dependencies]
+tempfile = "3.0"