[Feature Request] De-duplicate across campgrounds to find multiple date matches

[bryanwhiting]

This is great.

❯ find-campsites \
>     --campground 737 \
>     --nights 1 \
>     --day Wednesday \
>     --day Saturday \
>     --months 3 \
>     --api reservecalifornia
INFO	2022-07-26 22:33:24,822	Found campground: South Camp (sites 1-37) (campground id: 737)
INFO	2022-07-26 22:33:24,828	Found Availability:

campground                 campsite        date        weekday
South Camp (sites 1-37)    Campsite #18    08/17/22    Wednesday
South Camp (sites 1-37)    Campsite #04    08/24/22    Wednesday
South Camp (sites 1-37)    Campsite #35    08/24/22    Wednesday

This is a bit nuts :). the camply package de-duplicates and counts number of avialable reservations for a day.

❯ find-campsites \
>     --campground 734 \
>     --nights 1 \
>     --day Monday \
>     --day Friday \
>     --day Saturday \
>     --months 3 \
>     --api reservecalifornia
INFO	2022-07-26 22:33:55,450	Found campground: Pines Hollow and Dunes Camp (Sites 38 – 90) (campground id: 734)
INFO	2022-07-26 22:33:55,455	Found Availability:

campground                                     campsite        date        weekday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #41    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #55    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #56    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #58    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #60    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #64    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #65    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #66    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #67    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #68    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #70    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #71    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #77    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #84    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #87    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #88    08/22/22    Monday
Pines Hollow and Dunes Camp (Sites 38 – 90)    Campsite #89    08/22/22    Monday