Rename files with problematic names

[0xeb]

• removed emojis from file names
• other files rename

Note: the TOC has been generated automatically. Now even if the GitHub workflow triggers, it should find no need to change the TOC.md again after submit.

[0xeb]

Also, heads up:

After this is merged. I will haveidxtool rename all the files from:

'GPT file name.md'

to:

'gptid-GPT file name.md'

This will basically do two things:

All files on disk have consistent naming convention
Anyone can now quickly check on disk if a GPT exists or not, but simply doing: `find ./ | grep [GPTID]'