feat(convertWeightToHeader): added python script to generate c++ header for isotope weights

utils/atomic/readme.md

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+# Information
+Simple python utility for turning the file assets/atomic/weights.dat into a c++ header which can be included to provide easy access to all atomic weights inside 4DSSE
+
+## Requirments
+In order to use this utility you will need
+
+- Python
+- Pandas
+
+## Usage
+```bash
+python convertWeightsToHeader.py <path/to/weights.dat> -o atomicWeights.h
+```