block confidence: the Kusama canary parachain

[sandreim]

Motivation

Running a canary parachain on Kusama gives us better observability because we will control all of the collators. It also provides a real world environment to easily test new collator features or fixes before they are released.

The parachain is already deployed and produces blocks, see it in PJS, but it only has a single collator.

Tasks

• Add collator-selection pallet to enable easy addition/removal of collators: Add collator selection to YAP #9663
• Upgrade to 2509 stable, enable relay parent offset: Add collator selection to YAP #9663
• Upgrade the runtime. We need to double check if we need to do any kind of migration (should not be the case)
• Add additional collators. A good start would be to have 3 collators authoring blocks.
• Setup sTPS to continuously submit transactions to this chain (10-100TPS range is good)
• Add monitoring/alerting for transaction finality time, block production and block times
• 12 cores