Allow passing [ConversionPoint] into get_conversion with a type remap for ConversionPoint

tests/test_typehints_remap.py

@@ -0,0 +1,47 @@
+from dataclasses import dataclass
+from typing import Annotated
+
+import pytest
+
+from breakshaft.models import ConversionPoint
+from src.breakshaft.convertor import ConvRepo
+
+
+@dataclass
+class A:
+    a: int
+
+
+@dataclass
+class B:
+    b: float
+
+
+def test_basic():
+    repo = ConvRepo()
+
+    @repo.mark_injector()
+    def int_to_a(i: int) -> A:
+        return A(i)
+
+    type HackInt = int
+
+    def consumer(dep: A) -> int:
+        return dep.a
+
+    type NewA = A
+    type_remap = {'dep': NewA, 'return': Annotated[HackInt, 'fuck']}
+
+    assert len(ConversionPoint.from_fn(consumer, type_remap=type_remap)) == 1
+
+    with pytest.raises(ValueError):
+        fn1 = repo.get_conversion((int,), ConversionPoint.from_fn(consumer, type_remap=type_remap),
+                                  force_commutative=True, force_async=False, allow_async=False)
+
+    repo.mark_injector(type_remap={'i': int, 'return': NewA})(int_to_a)
+
+    fn1 = repo.get_conversion((int,), ConversionPoint.from_fn(consumer, type_remap=type_remap),
+                              force_commutative=True, force_async=False, allow_async=False)
+
+    assert fn1(42) == 42
+