Add controllable delay between starts of compute blocks

[ttmtrajkovic]

Implement a controllable delay between next start of compute block.

llk_wait_tiles() - start of workload
llk_push_tiles() - end of workload
--> measure time between push_tiles() and next wait_tiles() and make sure it’s always at least some amount of time

The value to sweep would be MINIMAL_WAIT_TIME and if between push_tiles() and wait_tiles() is less than MINIMAL_WAIT_TIME then push_tiles() should have an extra delay to start the matmul

there should be a check on both ends:
the time between end and start of next block of data should be either less than N or greater than K:

• N = 200
• K = 2000
  (initial value of the numbers)

Test this further with board team to observe how input current requirements change.

[ttmtrajkovic]

Added support to rd/didt_delay

Could be invoked with:
TT_ENABLE_WORKLOAD_DELAY=25000 pytest tests/didt/test_lm_head_matmul.py::test_lm_head_matmul -k "1chips" --iterations 1000000