Show information for non-text files in the status bar

[plbstl]

Description

This PR allows CodeEdit to show the file size of the currently opened file. And if the file is an image, CodeEdit also shows its dimensions.

I could not find a style for file information in the Figma concept.

Related Issues

• #1712

Checklist

• [x] I read and understood the contributing guide as well as the code of conduct
• [x] The issues this PR addresses are related to each other
• [x] My changes generate no new warnings
• [x] My code builds and runs on my machine
• [x] My changes are all related to the related issue above
• [x] I documented my code

Screenshots

sample.pdf:

sample.heic:

sample.ods:

screenshot.png