Add more actions around add/delete/update DB ops

[ryan]

Add more actions around add/delete/update DB ops. delete, deleted, update, updated, add, added, etc.

[ryan]

First pass, from Demitrious Kelly

[westi]

Sounds like an interesting idea.

Can we do for ___ing and ___ed e.g. deleting_post_meta and deleted_post_meta

So if I want to hook into before I use ing and after it's ed.

This still allows for the delete_post_meta name to be used for something more generic to the function.

[ryan]

We already do delete and deleted elsewhere. We might have to stick with that so we don't have to go -ing everything for consistency.

[ryan]

[11909]

[automattor]

(In [11941]) Actions for taxonomy updates. Props Demitrious Kelly. fixes #10750

[ryan]

(In [11968]) Actions for postmeta updates. Props Demitrious Kelly. see #10750