[feat] Should be able to resize the working files height

[abose]

Describe the problem

Customer comment

Previously I used to use one or two extensions that enabled resizing of the bottom working files area, these don’t seem to work correctly any more in either Brackets or Phoenix. Basically what I want to be able to do is adjust the space available for the working files at top and the project files below, this is what the extension(s) I used previously were able to do (but no longer seem to work). Currently the space available adjusts based on the amount of files open in the Left / Right split, as more files are opened into them then it will max out at a certain height and then lets you scroll to see the list of files. This works well but I would like to be able to adjust the amount of space given to the working files so that they can get more space to enable seeing more of the working files in the list rather than the rest of the project files. The working files are the ones I’m editing and switching between so I’d like to see more of those in the lists rather than the list of project files below. I hope that explanation makes sense, please let me know if not and I’ll try to clarify further.

Describe the solution you'd like

Alternatives considered

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Additional context

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