Add new min/max/dot SIMD instructions

[dcodeIO]

Adds the instructions

• i8x16.min_s / v128.min<i8>
• i8x16.min_u / v128.min<u8>
• i8x16.max_s / v128.max<i8>
• i8x16.max_u / v128.max<u8>
• i16x8.min_s / v128.min<i16>
• i16x8.min_u / v128.min<u16>
• i16x8.max_s / v128.max<i16>
• i16x8.max_u / v128.max<u16>
• i32x4.min_s / v128.min<i32>
• i32x4.min_u / v128.min<u32>
• i32x4.max_s / v128.max<i32>
• i32x4.max_u / v128.max<u32>
• i32x4.dot_i16x8_s / v128.dot<i16>

and updates Binaryen to latest. Also adds bindings for various new function, export and memory segment iteration APIs with _BinaryenGetMemorySegmentByteOffset currently commented out due to its non-portable int64_t return type (see fixed in WebAssembly/binaryen#2432).