feat(dynamite)!: validate version of dynamite_runtime when generating

[Leptopoda]

fixes: #1167

[provokateurin]

This should not only check dynamite_runtime but also every package that the generated code depends on (https://github.com/nextcloud/neon/blob/main/packages/dynamite/dynamite/lib/src/builder/imports.dart).

[Leptopoda]

I don't know if this is a good idea.
both dynamite_e2e and dynamite_petstore do not import all of these as they don't depend on all of them.
And which versions should we require?

[provokateurin]

I'd say if a package is missing from the pubspec then we can skip it since it might not be used as you said.
Regarding the required versions we could either test basically everything or just use the current major versions we depend on and then check the minimum minor and patch versions using pub downgrade and running tests.

[Leptopoda]

Downgrading for the test should not be needed if we assume devs follow semver (and the packages we choose should come from reputable publishers like we already do).

While we (nextcloud package) might be affected by a bug/need a feature does not mean other users face the same.
An example is that a user might not use a someOf in their spec so in that case we should not force them to use built_value:8.8.0.

[provokateurin]

I disagree, we should require dependencies that work for everyone, regardless of the features they use. Otherwise it makes no sense to check for dependency versions.
The downgrading was only meant as a way to figure out the lowest supported version. From our current dependency constraints it's impossible to know if we really support all the versions or depend on something that was added or fixed n a minor or patch release.

[Leptopoda]

forgot to push yesterday 😅
Should be ready now.

[provokateurin]

Please adjust the built_value_generator minimum to 8.8.1 (also in the dynamite docs): #1274.

[provokateurin]

LGTM, just one question