Add wrappers for Stable Diffusion 3.5 Large model (#20711)

- Wrappers for CLIP/T5 text encoders, Transformer, and VAEDecoder
contained in SD3.5 Large model.
- Support for exporting any or all of the above component output
generated from dummy input (normal-distributed random values).

Signed-off-by: Sangwon Ha <sangwon.ha@arm.com>