XEP-0443: XMPP Compliance Suites 2021

[Neustradamus]

Please add support of XEP-0443: XMPP Compliance Suites 2021: https://xmpp.org/extensions/xep-0443.html

Which replaces:

• XEP-0423: XMPP Compliance Suites 2020: https://xmpp.org/extensions/xep-0423.html
• XEP-0412: XMPP Compliance Suites 2019: https://xmpp.org/extensions/xep-0412.html
• XEP-0387: XMPP Compliance Suites 2018: https://xmpp.org/extensions/xep-0387.html
• XEP-0375: XMPP Compliance Suites 2016: https://xmpp.org/extensions/xep-0375.html
• XEP-0302: XMPP Compliance Suites 2012: https://xmpp.org/extensions/xep-0302.html
• XEP-0270: XMPP Compliance Suites 2010: https://xmpp.org/extensions/xep-0270.html
• XEP-0243: XMPP Server Compliance 2009: https://xmpp.org/extensions/xep-0243.html
• XEP-0242: XMPP Client Compliance 2009: https://xmpp.org/extensions/xep-0242.html
• XEP-0216: XMPP Intermediate Server 2008: https://xmpp.org/extensions/xep-0216.html
• XEP-0212: XMPP Basic Server 2008: https://xmpp.org/extensions/xep-0212.html
• XEP-0211: XMPP Basic Client 2008: https://xmpp.org/extensions/xep-0211.html
• XEP-0073: Basic IM Protocol Suite: https://xmpp.org/extensions/xep-0073.html