…m payload

### What and why?

There are several view updates happens which are not needed. These view updates are reduced by the backend anyway, but
we could reduce the number of view updates by filtering them out from the payload.

### How?

While saving RUMViewEvent to disk, we save the metadata along with it. This allows us to access key information without
decoding the whole event. While preparing the request body, we filter out the events which are duplicate and will be
sent in the same batch.

docs: add spi configuration

Regenerate rum model

REPLAY-1765 Add records count session replay stats

Pre-release `2.0.0-beta1`

RUMM-3404 Create MIGRATION.md

Fix v2 assets validation

…loader-more-eager

REPLAY-1868 Configure Session Replay uploader to be more eager

…-develop-merge

…m payload

…flakiness

REPLAY-1616 Fix flaky behaviour of `tools/sr-snapshots/Shell` util

Merge `feature/v2` to `develop`