feat(haproxy): implement HAProxy log shipper with initial configuration and dependencies

rust/haproxy_log_shipper/package.nix

@@ -0,0 +1,24 @@
+{
+  lib,
+  pkg-config,
+  rustPlatform,
+  systemd,
+}:
+rustPlatform.buildRustPackage {
+  pname = "haproxy-log-shipper";
+  version = "0.1.0";
+  src = import ../rust-source.nix { inherit lib; };
+
+  cargoLock.lockFile = ../../Cargo.lock;
+  cargoBuildFlags = [ "-p haproxy-log-shipper" ];
+  cargoTestFlags = [ "-p haproxy-log-shipper" ];
+
+  nativeBuildInputs = [ pkg-config ];
+  buildInputs = [ systemd ];
+
+  meta = {
+    description = "Ordered HAProxy journald ingestion client";
+    license = lib.licenses.mit;
+    platforms = lib.platforms.linux;
+  };
+}