Add GoTrue nix files + Initial setup

gotrue/README.md

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+# GoTrue benchmark(Work in progress)
+
+Updated and reproducible benchmark for GoTrue by using [Nix](https://nixos.org/) and [k6](https://k6.io).
+
+## Setup
+
+This whole setup will be handled by Nix.
+
+Run `nix-shell`. This will provide an environment where all the dependencies are available.
+
+```
+nix-shell
+>
+```
+
+## Usage
+
+
+TODO(Joel): Add K6 scripts
+

gotrue/default.nix

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+{ callPackage
+ , lib
+ , stdenv
+ , fetchurl
+ , nixos
+ , testers
+ }:
+
+ stdenv.mkDerivation (finalAttrs: {
+   pname = "gotrue";
+   version = "2.9.2";
+
+   src = fetchurl {
+     url = "https://github.com/supabase/gotrue/releases/download/v${finalAttrs.version}/gotrue-v${finalAttrs.version}-x86.tar.gz";
+     sha256 = "G+3qddI9zyuhx//TA1i1Pt+0Nig2PgEMOXvb9HqfBtY=";
+   };
+   phases = ["installPhase"];
+   installPhase = ''
+    mkdir -p $out/bin
+    tar xzvf $src
+    cp gotrue $out/bin/gotrue
+    chmod +x $out/bin/gotrue
+    '';
+
+ })

gotrue/shell.nix

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+let
+  nixpkgs = builtins.fetchTarball {
+    name = "nixos-20.03";
+    url = "https://github.com/nixos/nixpkgs/archive/7bc3a08d3a4c700b53a3b27f5acd149f24b931ec.tar.gz";
+    sha256 = "1kiz37052zsgvw7a378zg08mpbi1wk8dkgm5j6dy0x4mxvcg8ws3";
+  };
+  pkgs = import nixpkgs {};
+  deploy =
+    pkgs.writeShellScriptBin "gotrue-deploy"
+      ''
+        set -euo pipefail
+        set +e && nixops info -d gotrue > /dev/null 2> /dev/null
+        info=$? && set -e
+        if test $info -eq 1
+        then
+          echo "Creating deployment..."
+          nixops create deploy.nix -d gotrue
+        fi
+        nixops deploy -k -d pgrbench --allow-reboot --confirm
+      '';
+  info =
+    pkgs.writeShellScriptBin "gotrue-info"
+      ''
+        set -euo pipefail
+        nixops info -d gotrue
+      '';
+  k6 =
+    pkgs.writeShellScriptBin "gotrue-k6"
+      ''
+        set -euo pipefail
+        nixops ssh -d gotrue client k6 run -q --vus $1 - < $2
+      '';
+  repeat =
+    pkgs.writeShellScriptBin "repeat"
+      ''
+        set -euo pipefail
+        number=$1
+        shift
+        for i in `seq $number`; do
+          echo -e "\nRun: $i"
+          $@
+        done
+      '';
+  ssh =
+    pkgs.writeShellScriptBin "pgrbench-ssh"
+      ''
+        set -euo pipefail
+        nixops ssh -d pgrbench $1
+      '';
+  destroy =
+    pkgs.writeShellScriptBin "gotrue-destroy"
+      ''
+        set -euo pipefail
+        nixops destroy -d gotrue --confirm
+        nixops delete -d gotrue
+        rm .deployment.nixops
+      '';
+in
+pkgs.mkShell {
+  buildInputs = [
+    pkgs.nixops
+    deploy
+    info
+    k6
+    ssh
+    destroy
+    repeat
+  ];
+  shellHook = ''
+    export NIX_PATH="nixpkgs=${nixpkgs}:."
+    export NIXOPS_STATE=".deployment.nixops"
+  '';
+}