Create onboarding roadmap for WebVH Issuers

[esune]

[esune]

Related issue: openwallet-foundation/acapy#3885

[PatStLouis]

Document create for updating to AIP2, this is the first step:
https://github.com/openwallet-foundation/acapy/blob/main/docs/features/upgradingToAipv2.md

Still reviewing governance documents

[PatStLouis]

Please review initial draft document:
#295