Add clear-cache option to the Flush command

[xyluz]

The flush command currently only removes the saved records from the database (or whatever data storage is used), it does not 'flush' records in the cache. As the name suggests, flush should remove the record from the db, and clear cache (probably more of a personal opinion - but since it's not flush-from-storage, it's just flush).

This is useful because (from my work experience), after flushing records, I always clear cache. And it'll be useful to just have that option along side the flush command. I'm not entirely sure how many people do the same, but i would personally find this useful.

Hopefully someone agrees.

it's a simple addition to the codebase, and i hope this explanation above is sufficient, otherwise, please let me know if there are any feedback/questions regarding this.

Fingers crossed

[taylorotwell]

Thanks for your pull request to Laravel!

Unfortunately, I'm going to delay merging this code for now. To preserve our ability to adequately maintain the framework, we need to be very careful regarding the amount of code we include.

If applicable, please consider releasing your code as a package so that the community can still take advantage of your contributions!