Add vantablack theme (#4533)

themes/vantablack/neovim.lua

@@ -0,0 +1,17 @@
+return {
+  -- required for the vantablack nvim theme
+  {
+    "bjarneo/aether.nvim",
+    branch = "v2",
+  },
+  {
+    "bjarneo/vantablack.nvim",
+    priority = 1000,
+  },
+  {
+    "LazyVim/LazyVim",
+    opts = {
+      colorscheme = "vantablack",
+    },
+  },
+}