Add Thunderbird, cut down on swap usage to make hibernation more reliable

modules/desktop/home/thunderbird.nix

@@ -0,0 +1,24 @@
+{
+    # Thunderbird
+    programs.thunderbird = {
+        enable = true;
+        profiles.default = {
+            # name = "Default";
+            isDefault = true;
+        };
+    };
+
+    # Calendars
+    accounts.calendar.accounts.Main = {
+        # name = "Main";
+        primary = true;
+
+        remote = {
+            type = "caldav";
+            url = "http://dav.kurin.pi/radicale/ghostfox/3c2f5ce4-2fa6-1c5e-b08b-8ce2386c3739/";
+            userName = "ghostfox";
+        };
+
+        thunderbird.enable = true;
+    };
+}