fix mypy typechecks

[jandom]

Still work in progress! Down to last few checks

qreader.py:72: error: Argument "blur_kernel_sizes" to "DecodeQRResult" has incompatible type "tuple[tuple[int, int], ...] | None"; expected "tuple[tuple[int, int]] | None"  [arg-type]
qreader.py:85: error: Incompatible default for argument "reencode_to" (default has type "tuple[str, str]", argument has type "str | tuple[str] | list[str] | None")  [assignment]
qreader.py:122: error: Incompatible types in assignment (expression has type "tuple[str] | list[str]", variable has type "tuple[str, ...]")  [assignment]
qreader.py:225: error: Incompatible return value type (got "tuple[tuple[str | None, ...], tuple[dict[str, ndarray[Any, Any] | float | tuple[float | int, float | int]]]]", expected "tuple[dict[str, ndarray[Any, Any] | float | tuple[float | int, float | int]], str | None] | tuple[str | None, ...]")  [return-value]
qreader.py:231: error: "list" expects 1 type argument, but 2 given  [type-arg]
qreader.py:338: error: Unsupported operand types for - ("int" and "ndarray[Any, dtype[generic]]")  [operator]
qreader.py:359: error: Argument "blur_kernel_sizes" to "__threshold_and_blur_decodings" of "QReader" has incompatible type "tuple[tuple[int, int], tuple[int, int]]"; expected "tuple[tuple[int, int]]"  [arg-type]
Found 7 errors in 1 file (checked 1 source file)

[jandom]

Hahah, this wasn't quite ready yet but it was progress so still good – thx @Eric-Canas