Adapt ACMG rating for multiple sources of information

[gromdimon]

Is your feature request related to a problem? Please describe.
Currently the internal structure of ACMG rating uses only data from InterVar. However, it should also have ability to present info from multiple sources.

Describe the solution you'd like
Internal changes.

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
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