Added actions.opts.use_sys_clipboard, [issue: 789 ] (#1141)

doc/nvim-tree-lua.txt

@@ -146,6 +146,7 @@ function.
         timeout = 400,
       },
       actions = {
+        use_system_clipboard = true,
         change_dir = {
           enable = true,
           global = false,
@@ -479,6 +480,13 @@ Here is a list of the options available in the setup call:
 			`filetype = { "notify", "packer", "qf", "diff", "fugitive", "fugitiveblame", },`
 			`buftype  = { "nofile", "terminal", "help", }`
 		`}`
+    
+    - |actions.use_system_clipboard|: A boolean value that toggle the use of system clipboard 
+      when copy/paste function are invoked.
+      When enabled, copied text will be stored in registers '+' (system), otherwise, it will be stored in '1' and '"'.
+	type: `boolean`
+	default: `true`
+	
 
 *nvim-tree.log*
 |log|: configuration for diagnostic logging