Rust rewrite

The previous version in C++ was brittle in may regards.
This change reimplements everything in Rust and makes error handling much better.

This further packages `es2command-sys` crate which provides a minimal set of headers from the epson source which allows to derive the epsonscan2 library interface without downloading the original source.

.cargo/config.toml

@@ -0,0 +1,7 @@
+[target.aarch64-unknown-linux-gnu]
+strip = { path = "aarch64-linux-gnu-strip" }
+objcopy = { path = "aarch64-linux-gnu-objcopy" }
+
+[target.armv7-unknown-linux-gnueabihf]
+strip = { path = "arm-linux-gnueabihf-strip" }
+objcopy = { path =  "arm-linux-gnueabihf-objcopy" }

.github/workflows/ci.yml

@@ -0,0 +1,36 @@
+name: Rust check
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+env:
+  CARGO_TERM_COLOR: always
+  RUSTFLAGS: -Dwarnings
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Install dependencies
+      run: sudo apt-get install -y libssl-dev pkg-config clang build-essential libusb-1.0-0 libusb-1.0-0-dev g++ g++-aarch64-linux-gnu g++-arm-linux-gnueabihf
+    - name: Install rust dependencies
+      run: cargo install cross --git https://github.com/cross-rs/cross && cargo install cargo-deb cargo-sort
+    - name: Lint
+      run: make lint
+    - name: Tests usual
+      run: make test
+    - name: Build x86_64
+      run: make build && make deb
+    - name: Build aarch64
+      run: TARGET=aarch64-unknown-linux-gnu make build-cross && TARGET=aarch64-unknown-linux-gnu make deb
+    - name: Build armv7
+      run: TARGET=armv7-unknown-linux-gnueabihf make build-cross && TARGET=armv7-unknown-linux-gnueabihf make deb
+    - uses: actions/upload-artifact@v3
+      with:
+        name: packages
+        path: target/debian/*.deb

.gitignore

@@ -1,10 +1,3 @@
-Makefile
-epsonscan2-*
-CMakeFiles
-CMakeCache.txt
-cmake_install.cmake
-ess2devstate
 .vscode
-build
 .DS_Store
-include/*
+target/