chore(planetscale): reuse the same planetscale database for all ecosystem tests

[FGoessler]

Refactor our ecosystem tests for planetscale to reuse the same database (prisma/e2e-tests). Each test now has its own "namespaced" user table.

Part of this PR scope but in config or external systems:

• Update DATABASE_URL_PLANETSCALE Github Actions secret with the value from 1Password "Ecosystem Tests Planetscale Credentials"
• Update DATABASE_URL_PLANETSCALE for cloudflare pages ecosystem project in cloudflare
• Cleanup then unused secrets from the github actions

DRIVER_ADAPTERS_PLANETSCALE_CF_BASIC_DATABASE_URL
DRIVER_ADAPTERS_PLANETSCALE_CFPAGES_BASIC_DATABASE_URL
DRIVER_ADAPTERS_PLANETSCALE_VERCEL_NEXTJS_EDGEMW_DATABASE_URL
DRIVER_ADAPTERS_PLANETSCALE_NODE_BASIC_DATABASE_URL
DRIVER_ADAPTERS_PLANETSCALE_LAMBDA_BASIC_DATABASE_URL
DRIVER_ADAPTERS_PLANETSCALE_VERCEL_NEXTJS_DATABASE_URL

• Delete unused databases in planetscale

eco-driver-adapters-planetscale-node-basic
eco-driver-adapters-planetscale-lambda-basic
eco-driver-adapters-planetscale-cf-basic
eco-driver-adapters-planetscale-vercel-nextjs
eco-driver-adapters-planetscale-vercel-nextjs-edgemw
eco-driver-adapters-wasm-planetsacle-cfpages-basic