[sre] Use coop handles in parts of sre.c

[sre] Use coop handles in parts of sre.c

* Convert ves_icall_RuntimeType_MakeGenericType to use handles.
* The above necessitates converting mono_reflection_bind_generic_parameters and
  mono_reflection_type_get_handle (renamed to
  mono_reflection_type_handle_mono_type) to use handles.
* From there we have to touch a lot of builder internals:
  - ves_icall_DynamicMethod_create_dynamic_method
  - ves_icall_ModuleBuilder_RegisterToken
  - ves_icall_ModuleBuilder_basic_init
  - ves_icall_ModuleBuilder_getMethodToken
  - ves_icall_ModuleBuilder_getToken
  - ves_icall_ModuleBuilder_getUSIndex
  - ves_icall_TypeBuilder_create_runtime_class
* As well as runtime functions
  - mono_image_insert_string
  - mono_image_create_token
  - mono_class_{get,has,set}_ref_info
  - mono_reflection_is_usertype
  - mono_dynimage_encode_reflection_sighelper
  - mono_dynamic_image_register_token