Apply paste delay after key press and increase slider range

[sboys3]

Before Submitting This PR

Please confirm you have done the following:

• I have searched existing issues and pull requests (including closed ones) to ensure this isn't a duplicate
• I have read CONTRIBUTING.md

Human Written Description

The main purpose of this is for people to test if increasing the delay after improves clipboard pasting reliability. This fix applies the existing paste delay config option to after the paste key presses. Both the delay before and after are now controlled by the one setting. The clipboard seems to be reverted before the key presses go through to some applications, resulting in previous clipboard content being pasted instead of the new content. This slider on the debug page has also been extended out to 500ms, because on my system when there is heavy load, it is required to be that high. The only change this should have for normal users is it changes the second delay from 50 to 60 milliseconds by default.

Related Issues/Discussions

Discussion: #502

Community Feedback

Testing

I have used this fix for several days now, during which some of the time my system was under heavy load, and I have not had a paste failure since. Although 1000 milliseconds in total(500ms for the setting) does block the main thread for a while. Previously, it was a common occurrence to get incorrect content pasted.

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[cjpais]

Is it possible to make these two separate sliders @sboys3

Where: std::thread::sleep(std::time::Duration::from_millis(50)); was not previously using any variable

[github-actions]

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[hbenthow]

Is there an ETA of when this pull request might be implemented? I keep checking for updates to Handy and there haven't been any in a long time.

[cjpais]

I am in the process of releasing transcribe.cpp and integrating into handy in parallel. After this is done I will be reviewing issues and merging appropriate features.