[bookstack] Adds bookstack and cleans up a bunch of other files. Rewrites how mariadb instances are provisioned.

system/hosts/mcp/containers/baserow.nix

@@ -1,5 +1,5 @@
 # Not in use, just reference.
-{ config, pkgs, ... }:
+{ config, ... }:
 let inherit (import ./lib.nix config) mkContainer; in
 {
   virtualisation.oci-containers.containers.baserow = mkContainer {
@@ -19,4 +19,4 @@ let inherit (import ./lib.nix config) mkContainer; in
       description = "No-Code Databases";
     };
   };
-}
+}