Added the ability to adjust font size

[former_evernotist]

Full ack: There are several threads in this forum which go in the same direction, and there's not really a workaround in place. Just to quote one of the most recent ones:

Increase font size in iPad app

Greetings: Version number 12.8.1 on iPad 7th generation running iPadOS 15.6. When I increase the text size under Settings >> Display & Brightness, the size of the text in the body of the notes does not change. When I increase the text size under Settings >> Accessibility >> Display & Text Size >> Larger Accessibility Sizes, the size of the text in the body of the notes does not change. In other words, the body text size does not respond to attempts to increase it within the iPad settings. T…