feat: Adding the TSI (Tree-Sitter Install) command, changing the ui2

setup to use floating messages instead of the cmdline output, cleanup of
plugin loading.

nvim/lua/custom_commands.lua

@@ -4,6 +4,13 @@ vim.api.nvim_create_user_command('FindAndReplace', function(opts)
     vim.api.nvim_command(string.format('cfdo s/%s/%s/gc', opts.fargs[1], opts.fargs[2]) .. '| update | cclose')
 end, { nargs = '*' })
 
---vim.api.nvim_create_user_command('TSI', function (opts)
---    
---end)
+-- TODO: Set up a command for installing treesitter plugins via luarocks
+vim.api.nvim_create_user_command('TSI', function(opts)
+    local result = vim.system({ 'luarocks', 'install', 'tree-sitter-' .. opts.fargs[1] }, { text = true }):wait()
+    if result.code == 0 then
+        print('Completed install of tree-sitter-' .. opts.fargs[1])
+    else
+        print('Failed to install tree-sitter-' .. opts.fargs[1])
+        print(result.stdout)
+    end
+end, { nargs = '*' })