build: add stylua precommit hook

Author: cseickel

CONTRIBUTING.md

@@ -15,6 +15,12 @@ This is open for debate, but here is the current style choices being observed:
 I prefer `local name = function()` over `local function name()`, just to be
 consistant with the `M.name = function()` exports.
 
+### StyLua
+
+We use (StyLua)[https://github.com/JohnnyMorganz/StyLua] to enforce consistency
+in code. You should install it on your local machine. PRs will be checked with
+this tool.
+
 ## Commit Messages
 
 We use **semantic**, aka **conventional** commit messages. The official guide

lua/neo-tree/defaults.lua

@@ -9,6 +9,6 @@ local config = {
   enable_git_status = true,
   enable_diagnostics = true,
   open_files_in_last_window = true, -- false = open files int top left window
-                                     -- true = open files in last window visited
+  -- true = open files in last window visited
 }
 return config

lua/neo-tree/sources/filesystem/defaults.lua

@@ -94,7 +94,7 @@ local filesystem = {
       },
       {
         "name",
-        use_git_status_colors = true
+        use_git_status_colors = true,
       },
       {
         "clipboard",

lua/neo-tree/ui/renderer.lua

@@ -497,7 +497,7 @@ end
 --at; defaults to nil.
 M.show_nodes = function(sourceItems, state, parentId)
   local id = string.format("show_nodes %s:%s [%s]", state.name, state.force_float, state.tabnr)
-  utils.debounce(id, function ()
+  utils.debounce(id, function()
     local level = 0
     if parentId ~= nil then
       local parent = state.tree:get_node(parentId)