Move sync active requests to own modules

[dapplion]

Issue Addressed

PeerDAS will add two more sync ActiveRequest*. Currently there are only two: ActiveBlocksByRootRequest, ActiveBlobsByRootRequest as spaghetti in the same file

Proposed Changes

Move each ActiveRequest* to its own file to make space for upcoming PeerDAS PR with additional requests.

No change in logic or code, just copy pasted into new files