Add clap CLI, logging, and update Nix flake

Introduce a clap‑based command line interface and file logging using
simplelog. Add the corresponding dependencies (clap, log, simplelog) and
a release profile with LTO and stripping. Refactor the Nix flake:
update default.nix metadata, improve devShell, add update script and
metadata, and adjust flake.nix outputs accordingly. Update Cargo.lock
to reflect new crates.

default.nix

@@ -1,14 +1,49 @@
 {
   lib,
   rustPlatform,
-  packageName,
+  # fetchFromGitea,
   pkg-config,
-# add nixpkgs if your dependencies requires system libraries
-}:
-rustPlatform.buildRustPackage {
-  name = "${packageName}";
-  src = ./.;
-  # buildInputs = [ ];  <-- add nixpkgs if your dependencies requires system libraries
-  nativeBuildInputs = [ pkg-config ];
-  cargoHash = lib.fakeHash; # <-- Put your real hash here after failed nix build
-}
+  versionCheckHook,
+  nix-update-script,
+}: let
+  pname = "rust-flake-template";
+  version = "0.1.0";
+in
+  rustPlatform.buildRustPackage {
+    inherit pname version;
+
+    src = ./.;
+    # src = fetchFromGitea {
+    #   domain = "gitea.garandplg.com";
+    #   owner = "GarandPLG";
+    #   repo = "${pname}";
+    #   tag = "v${version}";
+    #   hash = lib.fakeHash;
+    # };
+
+    cargoHash = lib.fakeHash;
+
+    nativeBuildInputs = [pkg-config];
+
+    # buildInputs = [];
+
+    nativeInstallCheckInputs = [versionCheckHook];
+    doInstallCheck = true;
+
+    passthru.updateScript = nix-update-script {};
+
+    # postInstall = ''
+    #   cp -r statics $out/bin
+    # '';
+
+    meta = {
+      description = "Basic rust flake for development and production";
+      homepage = "https://gitea.garandplg.com/GarandPLG/${pname}";
+      license = lib.licenses.mit;
+      platforms = ["x86_64-linux"];
+      maintainers = with lib.maintainers; [
+        GarandPLG
+      ];
+      mainProgram = pname;
+    };
+  }