re-organize configuration

secrets/default.nix

@@ -0,0 +1,15 @@
+{ lib, config, ... }:
+with lib;
+{
+  options.my.secrets = mkOption {
+    type = types.attrs;
+  };
+
+  config.my.secrets = {
+    matrix-registration-shared-secret = lib.fileContents ./matrix-registration-shared-secret.secret;
+    shadow-hashed-password-alarsyo = lib.fileContents ./shadow-hashed-password-alarsyo.secret;
+    shadow-hashed-password-root = lib.fileContents ./shadow-hashed-password-root.secret;
+    miniflux-admin-credentials = lib.fileContents ./miniflux-admin-credentials.secret;
+    borg-backup-repo = lib.fileContents ./borg-backup-repo.secret;
+  };
+}