Adding a File Watcher / Live Preview to Glow

[lulzshadowwalker]

First of all I would like to thank you for all of the work and efforts you put in to provide such useful, creative, and inspiring tools to the community!

Feature Description

I believe it would be useful and a nice utility to have the preview re-rendered whenever the selected markdown file changes, especially for people who use the terminal for most of their development workflow.

Solution Suggestions

I suggest implementing a file watcher that watches a given file for changes and efficiently re-renders the preview.

Alternatives I Have Considered

• I tried using something like watch glow file.md which was functional but styles were messed up and lacking compared to running it normally.
• I searched through the issues on Github and noticed Rerender-Mode #135 and Add watch mode for glow #560 offering a similar suggestions but which are both still open.

Implementation and Guidance

I am willing to implement this feature myself if you'd allow me to do so, and I would appreciate it if you could give me an insight as to what I should consider or what you have in mind for such a feature e.g. any constraints or guidelines would be appreciated.

Thanks a lot
Will be waiting to hear from you