Add support for --title to the wt.exe commandline args

[zadjii-msft]

Summary of the Pull Request

Adds support for setting the terminal title with the commandline argument --title <title>.

PR Checklist

• Closes set tabTitle in commandline #6183
• I work here
• Tests added/passed
• Requires documentation to be updated - probably does, yea

Detailed Description of the Pull Request / Additional comments

• I wasn't sure how we felt about -t being the short version of this argument, so I left it out. If we're cool with that, adding it wouldn't be hard.

Validation Steps Performed

[miniksa]

• I wasn't sure how we felt about -t being the short version of this argument, so I left it out. If we're cool with that, adding it wouldn't be hard.

I feel like -t could mean too many things. Tab, title.... I'm sure there are more. But I'm not the one with the pulse of the command-line args as much as @DHowett is.

[miniksa]

Good enough to me.

[carlos-zamora]

[DHowett]

We can think about -t later. I'm not sure how i feel about it.

[ghost]

Hello @DHowett!

Because this pull request has the AutoMerge label, I will be glad to assist with helping to merge this pull request once all check-in policies pass.

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[ghost]

🎉Windows Terminal Preview v1.1.1671.0 has been released which incorporates this pull request.:tada:

Handy links:

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