Add UOps.VECTORIZE [run_process_replay] (#5289)

* Add UOps.VECTORIZE to core

* Update vectorized cast tests

* Addresses code review comments

- Removes VECTORIZE from LLVMRenderer
- Add line breaks to unduly long lines
- Add noop CAST rule back
- Update asserts and add render_vectorize in
  CSytleLanguage renderer

* Add missing const folding rule for VECTORIZE

Also adds corresponding test

* Fixes test_const_vectorize_fold and add assert

- Use sane types with VECTORIZE in test_const_vectorize_fold
- Add assert that sanity checks the types for VECTORIZE

* Rename test_cast_vectorized_fold

Renames test_cast_vectorized_fold to test_noop_vectorize_fold
because the test targets a very specific rule and there are
other tests for VECTORIZE.

* Revert unrelated changes

---------

Co-authored-by: qazal <[email protected]>
Co-authored-by: qazal <[email protected]>

tinygrad/runtime/ops_python.py

@@ -100,7 +100,7 @@ class PythonProgram:
               del ul[i]
               i = loop_ends[i] + 1
               continue
-        elif uop in (UOps.CAST, UOps.BITCAST):
+        elif uop in (UOps.CAST, UOps.BITCAST, UOps.VECTORIZE):
           if dtype.count > 1: ul[i] = inp
           else:
             assert dtp[0].fmt and dtype.fmt