P3327 R0 Contract assertions on function pointers

[wg21bot]

P3327R0 Contract assertions on function pointers (Timur Doumler)

[jfbastien]

For reference, see the previous vote from Tokyo on this topic: #1648 (comment)

Seen in EWG on Monday:

Poll: p3327r0: contracts should specify contracts on function pointers in its Minimal Viable Proposal (P2900).

SF	F	N	A	SA
1	1	4	10	20

Result: consensus against