anki: support multiple profiles

tests/modules/programs/anki/full-config.nix

@@ -1,7 +1,8 @@
 { pkgs, ... }:
 let
   # This would normally not be a file in the store for security reasons.
-  testKeyFile = pkgs.writeText "test-key-file" "a-sync-key";
+  fooKeyFile = pkgs.writeText "foo-key-file" "a-sync-key";
+  barKeyFile = pkgs.writeText "bar-key-file" "a-sync-key";
 in
 {
   programs.anki = {
@@ -30,14 +31,30 @@ in
     theme = "dark";
     uiScale = 1.0;
     videoDriver = "opengl";
-    sync = {
-      autoSync = true;
-      syncMedia = true;
-      autoSyncMediaMinutes = 15;
-      networkTimeout = 60;
-      url = "http://example.com/anki-sync/";
-      username = "lovelearning@email.com";
-      keyFile = testKeyFile;
+    profiles = {
+      foo = {
+        default = true;
+        sync = {
+          autoSync = true;
+          syncMedia = true;
+          autoSyncMediaMinutes = 15;
+          networkTimeout = 60;
+          url = "http://foo.com/anki-sync/";
+          username = "foo@email.com";
+          keyFile = fooKeyFile;
+        };
+      };
+      bar = {
+        sync = {
+          autoSync = false;
+          syncMedia = false;
+          autoSyncMediaMinutes = 30;
+          networkTimeout = 120;
+          url = "http://foo.com/anki-sync/";
+          username = "bar@email.com";
+          keyFile = barKeyFile;
+        };
+      };
     };
   };