Add a boilerplate template as opposed to targeted

Remove the specific target specific templates as they are out of sync.
As a downstream it is more logical to get a project structure in place
from whence you can start to build your specific Ghaf derived project.

Signed-off-by: Brian McGillion <bmg.avoin@gmail.com>

templates/boilerplate/.gitignore

@@ -0,0 +1,10 @@
+# SPDX-FileCopyrightText: 2022-2023 TII (SSRC) and the Ghaf contributors
+#
+# SPDX-License-Identifier: CC-BY-SA-4.0
+# SPDX-License-Identifier: CC0-1.0
+
+result*
+ghaf-host.qcow2
+.direnv/
+.idea
+linux-*/

templates/boilerplate/default.nix

@@ -0,0 +1,23 @@
+# SPDX-FileCopyrightText: 2023 Technology Innovation Institute (TII)
+# SPDX-FileCopyrightText: 2020-2023 Eelco Dolstra and the flake-compat contributors
+#
+# SPDX-License-Identifier: MIT
+# This file originates from:
+# https://github.com/nix-community/flake-compat
+# This file provides backward compatibility to nix < 2.4 clients
+{system ? builtins.currentSystem}: let
+  lock = builtins.fromJSON (builtins.readFile ./flake.lock);
+
+  inherit (lock.nodes.flake-compat.locked) owner repo rev narHash;
+
+  flake-compat = fetchTarball {
+    url = "https://github.com/${owner}/${repo}/archive/${rev}.tar.gz";
+    sha256 = narHash;
+  };
+
+  flake = import flake-compat {
+    inherit system;
+    src = ./.;
+  };
+in
+  flake.defaultNix