buildsystem: Move to meson for building the project

Meson will allow us to:
- Verify the used rust compiler is recent enough
- Install ressources such as a .desktop files, icons, etc.

build-aux/cargo.sh

@@ -0,0 +1,20 @@
+#!/bin/sh
+
+export MESON_BUILD_ROOT="$1"
+export MESON_SOURCE_ROOT="$2"
+export CARGO_TARGET_DIR="$MESON_BUILD_ROOT"/target
+export CARGO_HOME="$MESON_BUILD_ROOT"/cargo-home
+
+if [[ $4 = "development" ]]
+then
+    echo "DEBUG MODE"
+    cargo build --manifest-path \
+        "$MESON_SOURCE_ROOT"/Cargo.toml && \
+        cp "$CARGO_TARGET_DIR"/debug/$5 $3
+else
+    echo "RELEASE MODE"
+    cargo build --manifest-path \
+        "$MESON_SOURCE_ROOT"/Cargo.toml --release && \
+        cp "$CARGO_TARGET_DIR"/release/$5 $3
+fi
+