Investigate support for multiple file types and encodings

[ben-ryder]

Support reading and writing different file types, and also potentially text encodings.

Primitive data save/load

• Save/load text files
• Save/load binary data files

Text encodings

Hardcode to UTF-8 or look to support reading/saving other text encodings?
ASCII / UTF-16 etc?

Editors & file types

• Editors:
  • Markdown: .md
  • Basic Text: .txt
  • Data Files: .csv/.tsv
  • Spreadsheets: .xlsx / .ods (other spreadhseet formats?)
• Read only:
  • Images: .png / .jpg / .jpeg
  • Videos: .mp4 / .webm
  • Audios: .mp3 / .m4a / .opus
  • PDF: .pdf
• TBC
  • Excalidraw images/data files?