Support creating marco from an existing file

[conanak99]

Hi @jevakallio ,

This is a very cool project 👍 .

I was wondering if it's possible the create a macro from an existing file. With that, we don't need to record the macro, just keep typing and it will print out the content of the original file.

[conanak99]

Something similar to this https://github.com/rexxars/sublime-hacker-typer

Basically, the plugin (when enabled) looks for a file with the same name as the one you are editing, with an additional ".hackertyper"-extension.
When it finds this file, it treats it as the "solution" for the file. Whenever you type something, it will try to read the same number of characters from the solution file and replace whatever you typed.