Durango.8 - Metrics Overhaul

This version is backwards compatible to v1.11.0. It is optional, but encouraged.

The plugin version is unchanged at 35 and is compatible with versions v1.11.3-v1.11.7.

APIs

• Redesigned metrics to use labels rather than custom namespaces.

What's Changed

• Remove avalanche metrics registerer from consensus context by @StephenButtolph in #3087
• Remove rejection from consensus.Add by @StephenButtolph in #3084
• [vms/platformvm] Rename txstest.Builder to txstest.WalletFactory by @dhrubabasu in #2890
• Small metrics cleanup by @StephenButtolph in #3088
• Fix race in test by @StephenButtolph in #3089
• Implement error driven snowflake hardcoded to support a single beta by @aaronbuchwald in #2978
• Replace all chain namespaces with labels by @StephenButtolph in #3053
• add a metrics gauge for built block slot by @tsachiherman in #3048
• [ci] Switch to gh workers for arm64 by @marun in #3090
• [ci] Ensure focal arm64 builds all have their required dependencies by @marun in #3091
• X-chain - consolidate tx creation in unit tests by @abi87 in #2736
• Use netip.AddrPort rather than ips.IPPort by @StephenButtolph in #3094

Full Changelog: v1.11.7...v1.11.8