Avoid F12 auto open Devtools

Use the Chromium.OnChromeCommand event and set return to True if command_id is IDC_DEV_TOOLS_TOGGLE

```go
Chromium().SetOnChromeCommand(func(sender lcl.IObject, browser *cef.ICefBrowser, commandId int32, disposition consts.TCefWindowOpenDisposition) bool {
       if commandId == consts.IDC_DEV_TOOLS_TOGGLE {
		return true
	}
	return false
})
```