Implement a CL option to toggle whether wamrc can support extend-const-expr

[lum1n0us]

Implement a command line option to toggle whether wamrc can support extended-const-expression or not, and always enable the related compilation flag in CMakeLists.txt. --enable-gc will be a good reference.

Originally posted by @lum1n0us in #4318 (comment)

[kylo5aby]

implemented: #4412