Revise author information and project details in README

Merge remote-tracking branch 'origin/main'

updates banner

Update LICENSE

Update README.md

adds readme

adds license

updates sample with examples of initialising through JSON, manually and with custom elements

adds public support for poi images, poi entities and location entities

session is run and paused, supporting interrupted sessions

fixes spoke height rendering

mirador view publicly accessible via view container

updates to support only a singular location anchor entity, as this is all that's needed

updates relevant classes and functions to be public

tidies up greenwich sample