Registers a function that will be called every rendering frame, you can call ImGui functions in it, please check the ImGui.md documentation file for more info.
**Example Usage:**
```lua
tab:add_imgui(function()
if ImGui.Begin("My Custom Window") then
if ImGui.Button("Label") then
script.run_in_fiber(function(script)
-- call natives in there
end)
end
ImGui.End()
end
end)
```
- **Parameters:**
-`imgui_rendering` (function): Function that will be called every rendering frame, you can call ImGui functions in it, please check the ImGui.md documentation file for more info.