Exportation of variant information data

[alexejknaus]

When exporting a filtered set of variants to Excel or CSV it would be helpful when more meta information per variant would be exported:
all info in the

• "ClinVar"
• "Query Beacon" after query has been sent
• "Extra annotations" field, including CADD, REVEL (when adde), SliceAI, etc. UMD (after querrying the list of variants left)
• "Constrains": pLI, LOEF, etc.