Ina238 + 237 via a refactor of INA260 too.

[tyeth]

This refactors the INA2xx components to avoid naming clashes in enums. Moving the driver includes and enum usage inside the cpp files keeps it scoped which avoids the conflicts between INA260 library and INA238/7/xx library.
We could probably do the same to resolve the naming conflict/redefined warnings from the vl ToF series (but that still builds).

[tyeth]

@brentru This PR is ready for review, see notes above about the refactor

[brentru]

@tyeth The refactor and splitting these drivers from .h to .cpp/.h makes sense to me. There are some syntactical things I'd like addressed before merging.

[tyeth]

Ah damn, I've now overflowed some of the 4mb boards with the INA23x PR, so they'll need swapping to the no-ota partition sooner rather than later 😞

[tyeth]

I've been forced to do the no-ota swap today, as the INA238 PR was failing on the 4mb boards.
I've added the esptool definitions here (currently unmerged): adafruit/Wippersnapper_Boards#190
And this commit in INA23x PR adjusts them to build zips for esptool.
Will need to test this, by adding zip assets to latest release then prodding staging and try installer on these targets:
"magtag",
"metroesp32s2",
"feather_esp32s2",
"feather_esp32s2_tft",
"feather_esp32s2_reverse_tft",
"qtpy_esp32s2",
"feather_esp32s3_reverse_tft",
"qtpy_esp32s3_n4r2",
"feather_esp32s3_4mbflash_2mbpsram",
"feather_esp32s3_tft",

I'm going to temporarily migrate this to the no-OTA board repo, so we get the zip assets for <4MB boards

[tyeth]

@brentru I'm going to merge this one in later today/Monday, having done the review feedback, then release Monday with the DF Robot C3. Unless you'd like to discuss the PR generally, further, or the include stuff.

[brentru]

@tyeth Okay, please tag me for re-review before merging

[tyeth]

Already did, won't let me again unless I dismiss you first.
I think it's due to me not clicking resolved on the one remaining feedback

[brentru]

Nice, a lot of memory safety implemented too!