Added arduino nano every config

[midasgossye]

Added platform configuration for the arduino nano every in default.yaml.
Check this issue for more details.

Highlights from CHANGELOG.md

• Added nano_every platform to represent arduino:megaavr architecture
• See CHANGELOG.md for more

[ianfixes]

Please add a changelog entry like "Added nano_every platform to represent the arduino:megaavr architecture"

Regarding the test failures, I think the unit tests should be updated to include your platform... If you're not comfortable fixing the unit test yourself, just edit this PR to be against the tdd branch and I'll merge that in even when failing.

[midasgossye]

My bad for forgetting to add a changelog entry, sorry... 🤦
Should be added now. I tried to look into changing the unit tests but I'm afraid I will do more harm than good since I'm not familiar with Ruby 😅
I changed the base branch form master to tdd like you suggested.

[jgfoster]

Regarding the test failures, I think the unit tests should be updated to include your platform.

@ianfixes, I'm looking at open PRs and not sure what you are suggesting. It looks like all tests pass (or passed a year ago!). Are you suggesting adding nano to unittest/platforms in SampleProjects/TestSomething/.arduino-ci.yml? It seems that the existing list is intentionally short and does not include all possible platforms so I'm not sure how the existing list was selected. Thanks!

[ianfixes]

Ouch, time has gone by quickly.

The comment I made was in regard to this line being deleted:

0708704#diff-92a4a126d74841479f7a742fb740ce8edf0d48218b8d11adf405e92d860dda93L197

I think this PR should not go through unless that line is re-added and the resulting test failures addressed.

[ianfixes]

Integrated into #334 and seems to work in that context

[ianfixes]

This has merged as part of #334 and was released in v1.4.0