Contributed:

• Expose per-endpoint stats for providers (Thanks to https://github.com/jeluard)
• Adjust ink! primitive extraction for v4 (Thanks to https://github.com/statictype)

Changes:

• Ensure that provider disconnect clears all subscriptions
• Adjust typegen to internally use import() (catering for ESM provided types)
• Swap TS -> JS compiler to use tsc (from babel)
• Adjust all tests to use node:test runner (ESM variants)
• Update to latest Polkadot, Kusama & Substrate metadata