[Transformations][MOE] Add MOE internal op and fuse vectorized MatMul experts into MOE

[mitruska]

Details:

• Fuse vectorized MatMul experts into MOE for 3GEMMs and 2GEMMs pattern:

class ov::pass::VectorizedExpertsFusion : public ov::pass::GraphRewrite {
public:
    OPENVINO_GRAPH_REWRITE_RTTI("VectorizedExpertsFusion");
    VectorizedExpertsFusion() {
        add_matcher<ov::pass::FuseVectorizedMOE2GEMM>();
        add_matcher<ov::pass::FuseVectorizedMOE3GEMM>();
    }
};

• Add internal MOE op

Example registration of the fusion transformation for CPU plugin: 41145cf

MOE internal op spec PR:

• [Spec][MOE][Internal Op] Specification of MOE internal operation #32255

Tickets:

• transformation (and fusion details): 173663, op: 171913

[rkazants]

we can also use shape of weights for dimension size deduction if some of them is unknown in input hidden_state