Add replay feature

[Not-A-Normal-Robot]

• Add ability to create and save replays
• Add ability to read and playback replays
• Optional: Add a way to open a replay directly using command-line arguments
  This can be useful for auto-verifying replays or extracting replay data (e.g. timestamps of lines cleared) in an automatable way.
  An example flag could be --replay=insertBase64StringHere.
  Detailed replay data could be output into stdout like: Replay output below, with the next line containing a JSON.

[User670]

Speaking of command line arguments
When I open a file "with a certain program", or when I drag a file onto the executable in the file explorer, the program is launched with the file's path in the command line argument. If replays can be exported as a file, also consider implementing support for this command line argument so that people can drag or double-click a replay file, have Techmino open, and automatically start replaying the replay.