Feature request: Add New Cancer-Specific Database Annotations

[berntpopp]

Description:
Integrate annotations from cancer-specific databases such as OncoKB, CIViC, My Cancer Genome, and Cancer Hotspots. These databases provide valuable cancer-related variant information that can enhance the utility of the annotated VCF files, particularly for cancer research projects.

Tasks:

1. Update Configuration File:

   • Add paths for the new cancer-specific VCF annotation files in config.yaml.
   • Define fields for each new VCF annotation in the configuration file.

2. Utilize Existing Snakemake Rule:

   • Use the generalized rule for annotating with VCF files from Feature request: Generalize annotation script to annotate arbitrary VCF file data #4.
   • Generate required VCF files for OncoKB, CIViC, My Cancer Genome, and Cancer Hotspots annotations.

3. Documentation:

   • Update the README to include new configuration options and usage instructions for cancer-specific annotations.
   • Document the new rules and their purpose within the script.

Additional Context:
Adding these cancer-specific annotations will improve the utility of the VCF files for cancer research by providing comprehensive and relevant variant information.