recordings: record calls, link them to history, Recordings page

sp-sub-record now also sets CDR(SP_REC); phone numbers can record every
call (record_inbound), with the notice from Settings → Recording played
first (SP_REC_ANNOUNCE). Aggregation links the MixMonitor file as a
recordings row (size, ffprobe length). /api/recordings lists, plays
(Range; admins and the people on the call) and deletes; recordings past
recordings.retentionDays are deleted daily.

Web: Recordings page (play, download, delete), a player in Call history
and My calls, a Recording settings tab with the consent notice (08 §5),
and "Record every call" on phone numbers.

e2e m7-t3: the notice plays before a recorded inbound call and the
recording plays from Call history (the M7 acceptance). The AMI
Originate helper moved to scripts/e2e/ami.mjs.

Task: M7-T3

apps/api/src/generator/dialplan/static.ts

@@ -66,6 +66,7 @@ exten => s,1,Set(__SP_FWDHOPS=$[\${IF($["\${SP_FWDHOPS}" = ""]?0:\${SP_FWDHOPS})
 [sp-sub-record]
 exten => s,1,GotoIf($["\${SP_REC}" != ""]?done)
  same => n,Set(__SP_REC=\${STRFTIME(\${EPOCH},,%Y/%m/%d)}/\${UNIQUEID}.wav)
+ same => n,Set(CDR(SP_REC)=\${SP_REC})                   ; cdr_manager maps CDR variables only
  same => n,MixMonitor(\${SP_REC},b)
  same => n(done),Return()