UTILS:
1. Added station file converter from json to csv for gamma output format.
2. Moved conv_gamma() here. Added magnitude and corrected for event id preservation.
CORE:
1. Improved reformat_stainfo() for use case of only channel type, without component information.
Added options to take input in json from EQT or GAMMA.
2. Debugged conv_gamma() for phase data conversion and moved it to UTILS.
3. Added the option to specify magnitude dictionary when merging the summary files.
4. generate_parfile(): Added option to calculate magnitude (not effective yet, need more debugging).