refacto: move renderer git into file

also view.is_root_folder_modifier_visible don't take the tree as
parameter

lua/nvim-tree/actions/find-file.lua

@@ -12,7 +12,7 @@ function M.fn(fname)
   end
   running[fname] = true
 
-  local i = view.is_root_folder_visible(TreeExplorer) and 1 or 0
+  local i = view.is_root_folder_visible() and 1 or 0
   local tree_altered = false
 
   local function iterate_nodes(nodes)

lua/nvim-tree/actions/movements.lua

@@ -56,7 +56,7 @@ function M.parent_node(should_close)
         parent.open = false
         altered_tree = true
       end
-      if not view.is_root_folder_visible(TreeExplorer) then
+      if not view.is_root_folder_visible() then
         line = line - 1
       end
       view.set_cursor { line, 0 }
@@ -109,7 +109,7 @@ function M.sibling(direction)
     local target_node = parent.nodes[index]
 
     line, _ = get_line_from_node(target_node)(TreeExplorer.nodes, true)
-    if not view.is_root_folder_visible(TreeExplorer) then
+    if not view.is_root_folder_visible() then
       line = line - 1
     end
     view.set_cursor { line, 0 }

lua/nvim-tree/actions/search-node.lua

@@ -77,7 +77,7 @@ function M.fn()
   end
 
   if found_something and view.is_visible() then
-    if view.is_root_folder_visible(TreeExplorer) then
+    if view.is_root_folder_visible() then
       index = index + 1
     end