[Merged by Bors] - feat(Equicontinuity): equicontinuous family converges on a closed set #6942
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If
F : ι → X → α
is an equicontinuous family of functionsand
f : X → α
is a continuous function,then
{x | Tendsto (F · x) l (𝓝 (f x))}
is a closed set.