Added themery.nvim plugin (need to fix themes collection)

lua/plugins/themery.lua

@@ -0,0 +1,15 @@
+return {
+    "zaldih/themery.nvim",
+    -- lazy = true,
+    config = function()
+        local colors = vim.fn.getcompletion("", "color")
+        local themes = {}
+        for k,v in ipairs(colors) do
+            table.insert(themes, v)
+        end
+        require("themery").setup({
+            themes = themes,
+            livePreview = true,
+        })
+    end,
+}