new(bpf): errmetrics improvements#4120

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FedeDP wants to merge 7 commits intocilium:mainfrom

FedeDP:new/bpf_errmetrics_improvements

Commits on Sep 16, 2025

chore(bpf): add generic `with_errmetrics` macro.
FedeDP
committed

Commits on Sep 18, 2025

new(bpf,pkg/errmetrics): append bpf func information to errmetrics too.
FedeDP
committed
chore(bpf,pkg/errmetrics): use `__FILE_NAME__` macro for the fileid.
FedeDP
committed