added folders for microcosm bluesky and blacksky services

pkgs/bluesky/default.nix

···
+{ stdenv }:
+
+stdenv.mkDerivation rec {
+  name = "example-package-${version}";
+  version = "1.0";
+  src = ./.;
+  buildPhase = "echo echo Hello World > example";
+  installPhase = "install -Dm755 example $out";
+}

pkgs/microcosm/default.nix

···
+{ stdenv }:
+
+stdenv.mkDerivation rec {
+  name = "example-package-${version}";
+  version = "1.0";
+  src = ./.;
+  buildPhase = "echo echo Hello World > example";
+  installPhase = "install -Dm755 example $out";
+}