Add flake.nix to repo for easy setup with nix

[Sleeping-Donut]

Feature Request

By making the repo a flake by adding a flake.nix file to the project's root, it becomes very easy to setup for those on macOS or linux with nix installed

Suggest Steps to Implement (Optional)

Add flake.nix file to root of repo that defines the dependencies for Fire Tools.

I can provide one that I made however I only have a flake for making a dev environment with all the dependencies loaded, I haven't yet looked into how it can be altered to just be run straight from nix run

{
    description = "Tools for debloating and installing Google Play Services on Fire Tablets + More!";

    inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";

    outputs = { self, nixpkgs }:
        let
            supportedSystems = [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ];
            forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
            pkgs = forAllSystems (system: nixpkgs.legacyPackages.${system});
        in
        {
            devShells = forAllSystems (system: {
                default = pkgs.${system}.mkShellNoCC {
                    packages = with pkgs.${system}; [
                        android-tools
                        python3
                        python311Packages.certifi
                        python311Packages.charset-normalizer
                        python311Packages.customtkinter
                        python311Packages.darkdetect
                        python311Packages.packaging
                        python311Packages.requests
                        python311Packages.tkinter
                        python311Packages.urllib3
                        tk
                    ];
                };
            });
        };
}

[mrhaydendp]

This looks interesting, I'm not super familiar with Nix but will definitely look into this.