modules: move options to the top

This greatly improves readability and makes it easier to discover options.

This commit was genereated by running the following script inside the
repo root dir:

#!/usr/bin/env ruby

def transform(src)
  return false if src.include?('inherit options;')

  success = false

  options = nil
  src.sub!(/^  options.*?^  }.*?;/m) do |match|
    options = match
    "  inherit options;"
  end
  return false if !options

  src.sub!(/^with lib;\s*let\n+/m) do |match|
    success = true
    <<~EOF
      with lib;
      let
      #{options}

    EOF
  end

  success
end

Dir['modules/**/*.nix'].each do |f|
  src = File.read(f)
  if transform(src)
    puts "Changed file #{f}"
    File.write(f, src)
  end
end

modules/clightning-plugins/zmq.nix

@@ -2,6 +2,10 @@
 
 with lib;
 let
+  options.services.clightning.plugins.zmq = {
+    enable = mkEnableOption "ZMQ (clightning plugin)";
+  } // lib.genAttrs endpoints mkEndpointOption;
+
   cfg = config.services.clightning.plugins.zmq;
 
   nbLib = config.nix-bitcoin.lib;
@@ -31,9 +35,7 @@ let
     '';
 in
 {
-  options.services.clightning.plugins.zmq = {
-    enable = mkEnableOption "ZMQ (clightning plugin)";
-  } // lib.genAttrs endpoints mkEndpointOption;
+  inherit options;
 
   config = mkIf cfg.enable {
     services.clightning.extraConfig = ''