GH-150478: Add "show_jit" option to dis.dis to show jit entry points

[markshannon]

Adds a show_jit optional parameter to dis.dis.
When set (and adaptive also set) changes the output from this:

       L1:     FOR_ITER_RANGE           3 (to L2)
               STORE_FAST               1 (i)
               JUMP_BACKWARDS_JIT       5 (to L1)

to this (assuming the JIT is active):

       L1:     FOR_ITER_RANGE           3 (to L2)
               STORE_FAST               1 (i)
               ENTER_EXECUTOR           0

• Issue: Add a "show_jit" keyword-only parameter to dis.dis to show ENTER_EXECUTOR instructions #150478

[diegorusso]

Thanks, this is useful indeed.