[EcmaScript] 128-bit data type for import/export (SIMD)

[L2NE-dev]

For interop between WASM modules needs dedicated EcmaScript v128 data type in EcmaScript. Not Number or BigInt. There is probably needs sort of register reference, or exported 128-bit packed or bitfield value. I not means about SIMD in EcmaScript, but means about data type.