Leverage CMSIS-SVD files for better debug experience

[zlalanne]

Would be nice if the extension could leverage CMSIS-SVD files that some vendors provide to improve the debug experience when trying to debug peripherals.

Jetbrains CLion allows you to manually upload the SVD files. Maybe something that can be listed in launch.json.

[zlalanne]

Related, a python module for gdb to support SVD

https://github.com/1udo6arre/svd-tools