feat: new expo plugin

[matinzd]

This PR introduces the new expo adapter plugin alongside some bug fixes and document improvement.

Fixes:

• How to setup the library when using Wix react-native-navigation? #90
• lateinit property requestPermission has not been initialized #71
• Can't import HealthConnectPermissionDelegate into Java code #67

[TheRogue76]

This is perfectly fine, but i do have some worries about the plugin, specifically https://github.com/matinzd/expo-health-connect/blob/9d30d099577a9ffa66598b9099399a9074967099/src/withHealthConnect.ts#L35 and https://github.com/matinzd/expo-health-connect/blob/9d30d099577a9ffa66598b9099399a9074967099/src/withHealthConnect.ts#L51
Realistically, if you check that the activity is not null, it wouldn't make any sense for it NOT to have at least one, but i would like for it to double check anyway and maybe throw an error, not just return (cause then there is no happy path and the installation has gone horribly wrong).

[matinzd]

Yeah I totally agree with you. I was just making it work for now and didn't even publish it on npm. Created a PR to address those:

matinzd/expo-health-connect#1