Add `./wstools update`

[ronelm2000]

[Format]
./wstools update rid1;rid2;rid3 postprocessoralias1;postprocessoralias2

This command allows you to update cards that already exist in your ./cards.db using already existing card post-processors.
This will not skip the compatibility phase for post-processing, but will skip flag checks for skipping (or not skipping) typically employed in ./wstools parse url, like that used in yuyutei.

[Use Case]
Update YYT pricing by making it possible to schedule a job every day where YYT pricing data will always be obtained to allow price trend tracking.