Add host modules and home options; update README

modules/home/fastfetch/settings/logo.nix

@@ -0,0 +1,12 @@
+_: {
+  programs.fastfetch.settings.logo = {
+    source = ../garandos.png;
+    type = "kitty-direct";
+    height = 15;
+    width = 30;
+    padding = {
+      top = 3;
+      left = 3;
+    };
+  };
+}