Send output to file or to GITHUB_OUTPUT

[michaelkruglos]

Context

Some form of automatic or semi-automatic error filtering is necessary.

Suggested solution

Save build log output to a file or to GITHUB_OUTPUT, so the following step can look for common errors or match regexes against expected outputs.

Considered alternatives

All alternatives are manual and tedious. Logs are often very large and require manual download and searching.

Additional details

Some well known messages could be reported as errors using github api.