add CMData type return

[vst93]

Please provide Issues links to:

Provide test code:

	// get current Window Active , return CMData
	cmdata := robotgo.GetActiveCMData()

	// set Window Active by CMData
	robotgo.SetActiveByCMData(cmdata)
    

Description

In macos, I cannot get the pid of the wechat child window, so I can only use GetActive and SetActive to operate. However, since there is no secondary definition of the C.MData type, it is difficult to do the intermediate comparison operation, so I submitted This PR hopes to add CMData type return, and also add GetActiveCMData and SetActiveByCMData to facilitate operation.

By the way, since I am using it under macos15, I have to make adjustments based on the branch of #682

[CLAassistant]

Thank you for your submission! We really appreciate it. Like many open source projects, we ask that you all sign our Contributor License Agreement before we can accept your contribution.
0 out of 2 committers have signed the CLA.

❌ vst
❌ vcaesar

---

vst seems not to be a GitHub user. You need a GitHub account to be able to sign the CLA. If you have already a GitHub account, please add the email address used for this commit to your account.
_{You have signed the CLA already but the status is still pending? Let us recheck it.}

[vcaesar]

Closed because of code breaking and conflicts, I think there's must have clearer API and default promise call return value, see the #685.