[SLO] Improvement meta

[kdelemme]

This is an meta ticket for improving various features of the SLO product that I'm hoping we can work on in a near future.

In no particular order:

• Provide an SLO operational management page: [SLO] SLO ops management page #195266
• Make the burn rate widget less confusing: [SLO] Burn rate panel improvement #195139
• Allow custom duration for rolling SLOs and both occurrences and timeslices budgeting method: [SLO] Introduce a 1day time window duration #190784
• Write a blog post about usage with OTel demo

need refinement