servo: consolidate blockchains under cryptocurrencies directory

hosts/by-name/servo/services/cryptocurrencies/bitcoin.nix

@@ -26,7 +26,6 @@
 
   services.bitcoind.mainnet = {
     enable = true;
-    # TODO: set `rpc.users` to include my user
     rpc.users.colin = {
       # see docs at top of file for how to generate this
       passwordHMAC = "30002c05d82daa210550e17a182db3f3$6071444151281e1aa8a2729f75e3e2d224e9d7cac3974810dab60e7c28ffaae4";

hosts/by-name/servo/services/cryptocurrencies/default.nix

@@ -0,0 +1,7 @@
+{ ... }:
+{
+  imports = [
+    ./bitcoin.nix
+    ./monero.nix
+  ];
+}

hosts/by-name/servo/services/default.nix

@@ -1,9 +1,9 @@
 { ... }:
 {
   imports = [
-    ./bitcoin.nix
     ./calibre.nix
     ./coturn.nix
+    ./cryptocurrencies
     ./ddns-afraid.nix
     ./ddns-he.nix
     ./email
@@ -19,7 +19,6 @@
     ./komga.nix
     ./lemmy.nix
     ./matrix
-    ./monero.nix
     ./navidrome.nix
     ./nginx.nix
     ./nixos-prebuild.nix