feat(Mason): Ensure Installed some LSP's

*LSP's: Clangd, html, tsserver, rust_analyzer
*Add telescope-ui-select pluginwhich gives a nice ui in telescope code actions
*Change alpha ascii-art

lua/custom/plugins/telescope-ui-select.lua

@@ -0,0 +1,14 @@
+return {
+  'nvim-telescope/telescope-ui-select.nvim',
+  config = function()
+    require('telescope').setup({
+      extensions = {
+        ['ui-select'] = {
+          require('telescope.themes').get_dropdown {
+          }
+        }
+      }
+    })
+    require('telescope').load_extension('ui-select')
+  end
+}