purescript(switcheroo): Initialized repo

Signed-off-by: prescientmoon <git@moonythm.dev>

purescript/switcheroo/.gitignore

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+/bower_components/
+/node_modules/
+/.pulp-cache/
+/output/
+/generated-docs/
+/.psc-package/
+/.psc*
+/.purs*
+/.psa*
+/.spago

purescript/switcheroo/flake.nix

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+{ inputs =
+    { nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+      ps-tools.follows = "purs-nix/ps-tools";
+      purs-nix.url = "github:purs-nix/purs-nix/ps-0.15";
+      utils.url = "github:numtide/flake-utils";
+    };
+
+  outputs = { nixpkgs, utils, ... }@inputs:
+    utils.lib.eachSystem [ "x86_64-linux" "x86_64-darwin" ]
+      (system:
+         let
+           pkgs = nixpkgs.legacyPackages.${system};
+           ps-tools = inputs.ps-tools.legacyPackages.${system};
+           purs-nix = inputs.purs-nix { inherit system; };
+
+           ps =
+             purs-nix.purs
+               { dependencies =
+                   with purs-nix.ps-pkgs;
+                   [ console
+                     effect
+                     prelude
+                   ];
+
+                 dir = ./.;
+               };
+         in
+         { packages.default = ps.bundle {};
+
+           devShells.default =
+             pkgs.mkShell
+               { packages =
+                   with pkgs;
+                   [ entr
+                     nodejs
+                     (ps.command {})
+                     ps-tools.for-0_15.purescript-language-server
+                     purs-nix.esbuild
+                     purs-nix.purescript
+                   ];
+
+                 shellHook =
+                   ''
+                   alias watch="find src | entr -s 'echo bundling; purs-nix bundle'"
+                   '';
+               };
+         }
+      );
+}

purescript/switcheroo/src/Main.purs

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+module Main where
+
+import Prelude
+
+import Effect (Effect)
+import Effect.Console (log)
+
+main :: Effect Unit
+main = log "❄"