Add support for the cmod_a7 35 board.

[bl0x]

I've got a new and shiny Cmod A7 to play with, so here ya go!

[WhiteNinjaZ]

@bl0x It looks like you might have had a server timeout while CI was running. Try force pushing to your fork again.

[kgugala]

@bl0x It looks like you might have had a server timeout while CI was running. Try force pushing to your fork again.

I have restarted the build. The issues seem to be caused by to small custom runner coordinator machine. We've bumped the machine parameters

[kgugala]

@bl0x you're examples don't seem to be built in the CI. The CI runs code snippets from the documentation - you need to add build guide for your examples into the docs

[bl0x]

I've added the snippet to the docs.

[bl0x]

@kgugala Am I still missing something to make this ready for merging?

[bl0x]

@kgugala I can't accept or review the requested changes anymore. I did however add the documentation earlier. Checks seem to pass now.

[acomodi]

@bl0x thanks for this PR!

Everything is fine with CI. Counter tests have indeed run correctly for the CMOD A7.

The only thing missing is adding a mapping for the CMOD A7 board in the docs generation, or else an empty tab will appear in the readthedocs page (https://symbiflow-examples--190.org.readthedocs.build/en/190/building-examples.html#counter-test)

You should add the mapping here as done for the other boards.

[bl0x]

I've added the mapping. It would be nice, if the documentation (README?) would tell which changes are needed in the documentation.