Add features from slimevr modified lib

[wigwagwent]

Summary
When adding the LSM6DSV family to the slimevr firmware we needed a few features that are not present in this library.

This PR fixes/implements the following bugs/features

• Built in Gyro and Accel Tests
• Temperature ODR and raw
• Acceleration offset
• ability to add timestamp to fifo
• Device reset
• auto increment and block update exposed
• Base library updated to the latest
• Reduced communication amount by not reading sensitivity from imu every time you get the accel/gyro

Validation
A slightly modified version using most of these features works in the slimevr firmware but other than that I have not tested every added feature thoroughly.

SlimeVR Firmware

[cparata]

Hello @wigwagwent ,
thanks for the contribution. As you can see, your PR did not pass AStyle, spelling and compilation checks.
For AStyle you can give a look at the guide here.
For spelling you can give a look at the suggestion here.
There is also an issue in the compilation check here.
I suggest to fix all these issues before, then I will give a look at the PR.
Thanks again and Best Regards,
Carlo

[cparata]

Hello @wigwagwent ,
thanks for the new PR. Regarding the reg files, in STM32duino we decided to patch these files replacing the "stmdev_ctx_t" generic struct with a dedicated struct called "lsm6dsv16x_ctx_t" to avoid compilation errors when several MEMS components are used in the same example. So I prefer to keep the same approach also for this component to avoid misalignments. The rest of APIs seems fine to me. I will try to make a test with this new version in the next days to see if all the examples work properly.
Best Regards,
Carlo

[wigwagwent]

I did a search and replace to update all the stmdev_ctx_t to lsm6dsv16x_ctx_t

[cparata]

Hello @wigwagwent ,
thanks a lot for your contribution! I have integrated in the main branch your PR with small changes. I will release a new version of the library v2.0.0 with all these changes.
Best Regards,
Carlo