feat(queries): Task fn replaces ForeachChannel

[ragoune]

This simplified API uses ~40% less memory and reduces ~55% the number of allocations.

[codecov]

Codecov Report

❌ Patch coverage is 92.95154% with 16 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
query.go	92.95%	8 Missing and 8 partials ⚠️

Files with missing lines	Coverage Δ
query.go	86.30% <92.95%> (+1.15%)	⬆️

... and 7 files with indirect coverage changes

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