migrate DIC (formerly: `ctdcast_bottle_dic`) to new db

[bbest]

See:

• datasheet | calcofi - Google Sheets:

  active	category	table_field	plot_title	plot_label	plot_color
  FALSE	Oceanographic	ctdcast_bottle_dic.bottle_o2_ml_l	Oxygen Content	Oxygen (mL/L)	blue
  FALSE	Oceanographic	ctdcast_bottle_dic.bottle_o2_mmol_kg	Oxygen Content	Oxygen (µmol/kg)	blue
  FALSE	Oceanographic	ctdcast_bottle_dic.dic1	Dissolved Inorganic Carbon	DIC (µmol/Kg)	brown
  FALSE	Oceanographic	ctdcast_bottle_dic.dic2	Dissolved Inorganic Carbon	DIC (µmol/Kg) on a replicate sample	brown

• https://github.com/CalCOFI/scripts/blob/b5db4092b5bc024de5f673b00b20a104eaf032df/load_bottle-stations.Rmd#L288-L318