feat: add multi-stage native and Wine-based Docker containers

[doomedraven]

Summary

This PR introduces fully automated, multi-stage Docker containerization for de4dotEx. It enables running de4dotEx seamlessly as a cross-platform command-line utility or microservice under any standard Docker-enabled host.

Key Changes

1. Strategy A: Native .NET 8.0 Linux Container (Dockerfile):

   • Uses a multi-stage build starting with an Ubuntu stage to compile the native C++ BeaEngine (libBeaEngine.so) disassembler library from source on Linux.
   • Leverages the official .NET 8.0 SDK to publish de4dot natively and packages it into a slim .NET runtime image.
   • Copies the compiled libBeaEngine.so to /usr/local/lib and registers it globally via ldconfig so it is automatically available for ConfuserEx control-flow disassembly.

2. Strategy B: Wine-compatible .NET Framework 4.8 Container (Dockerfile.wine):

   • Employs a multi-stage Mono SDK (mono:6.12.0) builder stage to natively restore and compile the .NET Framework 4.8 solution (de4dot.netframework.sln) inside the container on Linux—meaning no pre-compilation or Windows host is required!
   • Packages the output into a headless Ubuntu container pre-configured with wine64 and wine packages natively.
   • Pre-downloads the official wine-mono-7.0.0-x86.msi package into Wine's global shared folder /usr/share/wine/mono/ at build-time, which wineboot -u automatically registers during bootstrap. This creates a completely self-contained, offline-compatible Wine .NET Framework prefix.

3. Optimization and Client Utilities:

   • Includes .dockerignore to restrict local build files and temporary assets from polluting the build context.
   • Integrates comprehensive building, running, and troubleshooting documentation (including explicit Rosetta 2/QEMU --platform linux/amd64 instructions for Apple Silicon Mac hosts) directly into the primary README.md.