An option for //distr and //count to report the location of the first block found of that type.

### The Problem

Sometimes I forget where I placed an important block, or I want to verify I placed it correctly without digging up the wall in front.

### A Solution

Since //count and //distr already accomplish the block search effort, it should be trivial to add a flag that makes them report the first found location for each block type they report. With //count, obviously, there's only one location to report. Still the idea seems similar enough that they should use the same flag.

### Alternatives

Copy the world, replace everything except the blocks to locate with air.

### Anything Else?

_No response_