perf(plugin): use lua for plugin initialization

SEE #10

plugin/libmodal.lua

@@ -0,0 +1,20 @@
+local exe = vim.api.nvim_command
+local g = vim.g
+local go = vim.go
+
+if g.loaded_libmodal then return end
+g.loaded_libmodal = true
+
+if g.libmodalTimeouts == nil then
+	g.libmodalTimeouts = go.timeout
+end
+
+--[[/* User Configuration */]]
+
+-- The default highlight groups (for colors) are specified below.
+-- Change these default colors by defining or linking the corresponding highlight group.
+exe
+[[
+	highlight default link LibmodalPrompt ModeMsg
+	highlight default link LibmodalStar StatusLine
+]]

plugin/libmodal.vim

@@ -1,17 +0,0 @@
-if exists('g:loaded_libmodal')
-	finish
-endif
-let g:loaded_libmodal = 1
-
-if !exists('g:libmodalTimeouts')
-	let g:libmodalTimeouts = &timeout
-endif
-
-" ************************************************************
-" * User Configuration
-" ************************************************************
-
-" The default highlight groups (for colors) are specified below.
-" Change these default colors by defining or linking the corresponding highlight group.
-highlight default link LibmodalPrompt ModeMsg
-highlight default link LibmodalStar StatusLine