Added a fuction/method setTerminalsize in Exec.ExecBuilber

[sriganeshres]

I have added a function in Exec.ExecBuilder class which helps to set the Terminal size.

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[sriganeshres]

related to #3641

[brendandburns]

This isn't quite correct. What you need to do is to add a setTerminalSize(...) method to the Exec class, that method can only run once execute() has been called and the connection is established.

[brendandburns]

Please revert all formatting changes here and below.

[brendandburns]

Thanks for starting this. Two notes:
First, please don't include any unrelated formatting changes, it makes it harder to review the PR, you can use git diff HEAD~1 to visualize any differences in your commit before you send the PR.

Second, this change isn't quite correct, you need to add a utility method to the Exec class, not to the builder. The builder is what sets up an Exec instance, but the terminal resize can only happen once the exec call starts. If the method is added to the Exec class, then someone who starts a call to Exec can resize the stream once the connection is established.

[sriganeshres]

Sorry @brendandburns for very very late response. But can you guide me more than just that im facing a bit of issue here while trying to maintain that it should be able to be run after execute(). Thanks for the support till now.