Issue #3612689: Show defined category and tier prices in the admin lists

Adds a Price column to the resource Categories list and the slot Tiers list.

The column shows the price defined on the row itself, not the resolved price: a category's own price, or a tier's price override. Where the row defines none (a category that inherits its payment block, a tier with no override) it reads "Inherited", so a resource manager sees at a glance where a price is set and where it is inherited from. The final resolved price a booker pays stays on the booking and place-map pages.

yoyaku_ui builds the two tables without any price concept and exposes hook_yoyaku_ui_entity_table_alter(), keeping no dependency on payment; yoyaku_payment fills the seam with the Price column.

Includes a kernel test for both tables, the Inherited French translation, and a docs note.