Adding Nix flake support

flake.nix

@@ -0,0 +1,35 @@
+{
+  description = "OOTT - An easy to setup and use network device monitoring service";
+
+  inputs = {
+    nixpkgs.url = "nixpkgs/nixos-unstable";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+  }: let
+    # System types to support.
+    supportedSystems = ["x86_64-linux"];
+
+    # Helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ... }'.
+    forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+
+    # Nixpkgs instantiated for supported system types.
+    nixpkgsFor = forAllSystems (system: import nixpkgs {inherit system;});
+
+    version = "0.0.1";
+    pname = "oott";
+  in {
+    packages = forAllSystems (system: let
+      pkgs = nixpkgsFor.${system};
+    in {
+      ${pname} = pkgs.rustPlatform.buildRustPackage rec {
+        inherit pname;
+        inherit version;
+        src = ./.;
+        cargoLock = ./Cargo.lock;
+      };
+    });
+  };
+}