Add a nix flake to have a devshell
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..f30c0f6
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,43 @@
+{
+ "nodes": {
+ "flake-utils": {
+ "locked": {
+ "lastModified": 1676283394,
+ "narHash": "sha256-XX2f9c3iySLCw54rJ/CZs+ZK6IQy7GXNY4nSOyu2QG4=",
+ "owner": "numtide",
+ "repo": "flake-utils",
+ "rev": "3db36a8b464d0c4532ba1c7dda728f4576d6d073",
+ "type": "github"
+ },
+ "original": {
+ "owner": "numtide",
+ "repo": "flake-utils",
+ "type": "github"
+ }
+ },
+ "nixpkgs": {
+ "locked": {
+ "lastModified": 1677852945,
+ "narHash": "sha256-liiVJjkBTuBTAkRW3hrI8MbPD2ImYzwUpa7kvteiKhM=",
+ "owner": "NixOS",
+ "repo": "nixpkgs",
+ "rev": "f5ffd5787786dde3a8bf648c7a1b5f78c4e01abb",
+ "type": "github"
+ },
+ "original": {
+ "owner": "NixOS",
+ "ref": "nixpkgs-unstable",
+ "repo": "nixpkgs",
+ "type": "github"
+ }
+ },
+ "root": {
+ "inputs": {
+ "flake-utils": "flake-utils",
+ "nixpkgs": "nixpkgs"
+ }
+ }
+ },
+ "root": "root",
+ "version": 7
+}