Implement array locator methods for SystemVerilog queues and dynamic arrays:
find, find_index, find_first, find_first_index, find_last, find_last_index,
unique, and unique_index. Support both value arguments (equality) and
with (predicate) forms using implicit item and index in the iterator scope.
Elaboration returns queue-typed results for first/last/index locators per LRM
(empty queue when no match). Fix assignment compatibility between queues and
dynamic arrays where element types match.
VVP: extend %queue/size, %queue/word, %queue/find*, and %queue/unique* paths
so nets holding vvp_darray (including atom-backed int[]) are handled, not
only vvp_queue_vec4. Queue types still subclass vvp_darray; resolve vec4
queues before plain dynamic arrays. Fall back to the legacy get_queue_object
path for non-vec4 queues. Document opcode and source file touchpoints in
ivtest/ivltests/README_sv_queue_locators.txt.
Add vvp regressions: sv_queue_find*, sv_queue_unique, sv_queue_find_locators_ext,
sv_darray_find_locators.
Made-with: Cursor
mjoekhan