Currently, in testing/todocheck_test.go, there are two tests which are actually unit tests, while the tests in this file are meant to be system tests - testing the todocheck binary in a black box manner.

The tests are:

• TestValidOrigins
• TestInvalidOrigins

What to do about it?

• Extract those two tests into validation/validation_test.go.
• Add a new make step for running

	// makeExample replaces all ${linter} placeholders to a bound linter name.

The code below does not use ${linter} anywhere.
I could remove this, but would also like to avoid doing several unrelated things on the same PR, so keeping it as an issue to avoid forgetting about it.

Thanks to @paulrrdiaz we have a media carousel for our tool resources now. 🚀

Here's how it looks like:
https://analysis-tools.dev/tool/deepcode

One improvement we discussed was showing thumbnails for each resource below the carousel.
This would give a g