nimPackages: add csvtools

pkgs/development/nim-packages/csvtools/default.nix

···
+{ lib, pkgs, buildNimPackage, fetchFromGitHub }:
+
+buildNimPackage (finalAttrs: {
+  pname = "csvtools";
+  version = "0.2.1";
+  src = fetchFromGitHub {
+    owner = "andreaferretti";
+    repo = "csvtools";
+    rev = "${finalAttrs.version}";
+    hash = "sha256-G/OvcusnlRR5zdGF+wC7z411RLXI6D9aFJVj9LrMR+s=";
+  };
+  doCheck = true;
+  meta = finalAttrs.src.meta // {
+    description = "Manage CSV files easily in Nim";
+    homepage = "https://github.com/andreaferretti/csvtools";
+    license = lib.licenses.asl20;
+    maintainers = [ lib.maintainers.trevdev ];
+  };
+})

pkgs/top-level/nim-packages.nix

···
 
     coap = callPackage  ../development/nim-packages/coap { };
 
+    csvtools = callPackage ../development/nim-packages/csvtools { };
+
     db_connector = callPackage ../development/nim-packages/db_connector { };
 
     docopt = callPackage ../development/nim-packages/docopt { };