feat: add command line executables for climatearray2rds processing

[IshikaKhandelwal]

#90

Example CLI run:

Rscript scripts/main.R climatearray2rds -i "data-raw/tier_1/data/climate" -o "data-raw/tier_1/data/climate/outputs" -y 1961 -p TRUE -w 4

Example Docker run:

./docker_climatearray2rds.sh "$(pwd)/data-raw/tier_1/data/climate" "$(pwd)/data-raw/tier_1/data/climate/outputs" -y 1961 -p TRUE -w 4

[carlosgjs]

Looks good! Can you also add a shell script similar to docker_shp2rds.sh to run this via the container? You'll need to rebuild the container, which I usually do locally with the tag biodiv and then tweak the first line of run_container.sh to test.

[carlosgjs]

See one comment before merging, thx!