initial type checking

[ledhed2222]

setup basic type checking

• later, we'll want to use the --strict flag with mypy. but for now this passes non strict checks and sets up GitHub Actions to check types ongoing

[ledhed2222]

@cslashm FYI :)

[cslashm]

@ledhed2222 I check asap. Thanks for your contribution

[ledhed2222]

@cslashm ping :)

[ledhed2222]

@cslashm ping :)

[ledhed2222]

bump

[ledhed2222]

@cslashm bump

[ledhed2222]

bump

[ledhed2222]

hey can we look at this?