Fill `ark` and `arkctapp` gaps

[grossir]

Related to #929. To fill these gaps we will implement a dynamic backscraper for this source

arkctapp

From June 5th, 2019 to February 9th, 2022, we have 0 documents. Missing around 1100 docs: 586 docs in 2020, 511 in 2021, and some more from 2019/2022 (Source)

ark

From June 21st, 2019 to May 13th, 2020 we have 0 documents. Around 300 missing documents from second half 2019 and first half 2020

Between September 11, 2020 and March 03, 2021 we have 0 documents. We are missing around 100 documents

From March 19th, 2021 to December 1st, 2021 we have 0 documents. Around 130 missing documents

[grossir]

docker exec -it cl-django python /opt/courtlistener/manage.py cl_back_scrape_opinions  --courts juriscraper.opinions.united_states.state.arkctapp --backscrape-start=06/05/2019 --backscrape-end=02/09/2022

docker exec -it cl-django python /opt/courtlistener/manage.py cl_back_scrape_opinions  --courts juriscraper.opinions.united_states.state.ark --backscrape-start=06/20/2019 --backscrape-end=05/13/2020

docker exec -it cl-django python /opt/courtlistener/manage.py cl_back_scrape_opinions  --courts juriscraper.opinions.united_states.state.ark --backscrape-start=09/11/2020 --backscrape-end=03/03/2021

docker exec -it cl-django python /opt/courtlistener/manage.py cl_back_scrape_opinions  --courts juriscraper.opinions.united_states.state.ark --backscrape-start=03/19/2021 --backscrape-end=12/02/2021