Add preserve_ops to EdgeCompileConfig (#12546)

1. Add `preserve_ops` to `EdgeCompileConfig`
2. Remove preserved ops from the decomposition table in `to_edge`.
3. Add checks to the verifier ensuring that preserved ops do not have mutations or views.
4. Update 'core_aten_exception_list' to be 'preserved_ops' in `to_edge_transform_and_lower`.

Context/Usage
**core_aten_ops_exception_list**
- Contains operators that are missing a decomposition to core aten.
- Exclude these so that verification can still be run on the rest of the graph.
- Ideally, this list should be empty.

**preserve_ops**
- Contains operators that the user specifically does not want decomposed.
- Must be aten; custom ops are ignored by verifier.

Edge case:
- If an aten operator does not have a decomp, and the user specifically wants it to be preserved, put it in preserve_ops rather than core_aten_ops_exception_list.

Differential Revision: [D78298749](https://our.internmc.facebook.com/intern/diff/D78298749/)

Author: pytorchbot

exir/program/test/test_program.py

@@ -784,7 +784,11 @@ def _test_to_edge_with_preserved_ops(
         self, program, preserved_ops, expected_preserved_ops
     ):
         edge = to_edge(
+<<<<<<< HEAD
             program, compile_config=EdgeCompileConfig(preserve_ops=preserved_ops)
+=======
+            program, compile_config=EdgeCompileConfig(_preserve_ops=preserved_ops)
+>>>>>>> 0012ffaf9f (Add preserve_ops to EdgeCompileConfig (#12546))
         )
 
         def count_nodes(graph_module, target):