Helper function to streamline queries of the WDFW Postgres database.
Examples
if (FALSE) { # \dontrun{
a <- fetch_db_table(con, "creel", "fishery_location_lut")
b <- fetch_db_table(con, "creel", "fishery_location_lut", filter = "survey_type == 'Index'")
c <- fetch_db_table(con, "creel", "fishery_location_lut",
filter = c("survey_type == 'Index'", "section_num == '1'"))
} # }