Piano Analytics configuration variable. To be used with Piano Analytics tag template.

1. Add hint for configuration value
2. Allow configuration values to be JS variables
3. Add consent feature management
4. Fix some configuration type not casted
5. Deprecate Privacy feature
7. Manage queueVarName configuration key
8. Manage campaignPrefix configuration key (array)
9. Allow `-` in collectDomain regex
10. Fix empty confTable
11. Initial release.