[Screencast Mode] Allow users to customize font sizes for displaying keyboard shortcuts

[tommai78101]

Currently, these are the settings for Screencast Mode:

I would like for the ability to allow users to choose how large or small the keyboard shortcuts are displayed on the screen when Screencast Mode is enabled.

Personally, I felt the font sizes of the keyboard shortcuts to be a bit too large in Screencast Mode, so I wanted to change it up. If an option allows me to set the font sizes exists, then may I request that option to be added to the Settings menu page?

[lszomoru]

Verification:
A new setting (screencastMode.fontSize) was added in order to control the size of the font used in screencast mode.

Steps:

• Enable Screencast mode
• Change the value of the screencastMode.fontSize and confirm that the font size changes
• Enter a value smaller than 20 and confirm that the font size will be 20
• Enter a value greater than 100, and confirm that the font size will be 100

[isidorn]

I have verified this works as expected.
Feels like bloat though.