Functionalized RHOT dataframe creation
For all input types (tab-delim, NWIS query, spec file, and folder upload), changed handling of the following:
- rv$station_specs_df : now created with generate_station_specifcations()
- rv$perc_ranges_df : now created with generate_perc_ranges()
- rv$data_flow_int_df : now created with generate_data_flow_int()
This will standardize and simplify the creation of these and the ability to modify handling of inputs.
Known placeholders:
- PkPlot remains an unconnected placeholder.
- 'Run PeakFQ' button non-functional at this time
Ready to merge once Shanna has had a chance to review & approves!