v1.19.0: SentenceTransformers OpenVINO support

• Support SentenceTransformers models inference by @aleksandr-mokrov in #865

from optimum.intel import OVSentenceTransformer

model_id = "sentence-transformers/all-mpnet-base-v2"
model = OVSentenceTransformer.from_pretrained(model_id, export=True)
sentences = ["This is an example sentence", "Each sentence is converted"]
embeddings = model.encode(sentences)

• Infer if the model needs to be exported or not by @echarlaix in #825

  from optimum.intel import OVModelForCausalLM

- model = OVModelForCausalLM.from_pretrained("gpt2", export=True)
+ model = OVModelForCausalLM.from_pretrained("gpt2")

Compatible with transformers>=4.36,<=4.44

Full Changelog: v1.18.0...v1.19.0