ADS-114 Document Ads events

[MaartenRimaux]

Summary

Add the V2 Events guide stacked on Templates.

The page explains event identity, startDate/endDate windows, eventId on breaks, complete-break-interval validation, and the deletion cascade for member breaks.

It also documents event preparation plus wallclock-only cue/punch behavior, including one-cued-break-per-channel constraints, optional punch start defaulting to now, and CRUD/listing examples with Basic auth and X-Org-ID.

Link to Devin session: https://dolby.devinenterprise.com/sessions/b934d3445fec4fd8aa7c8dbdcedfb3bc
Requested by: @MaartenRimaux

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