build: change to the default build method that uses a shared library

[zemyblue]

Description

When building with make build, change the default build method so that it is built as a binary that uses a shared library.
However, we can build a single binary as a static library using the command make build LINK_STATICALLY=true.

closes: #276

Motivation and context

A single binary build using static library failed in Ubuntu.
And there is not fix way because wasmvm static library use mucl static library.

How has this been tested?

1. make build
2. check the build binary in the ./build/ directory
3. check linked libraries as using ldd ./build/fnsad.

$ ldd ./build/fnsad 
        linux-vdso.so.1 (0x00007fff68001000)
        libwasmvm.x86_64.so => /home/zemyblue/go/pkg/mod/github.com/!finschia/[email protected]/internal/api/libwasmvm.x86_64.so (0x00007f904b800000)
        libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f904b400000)
        libgcc_s.so.1 => /lib/x86_64-linux-gnu/libgcc_s.so.1 (0x00007f904b7dd000)
        librt.so.1 => /lib/x86_64-linux-gnu/librt.so.1 (0x00007f904bdb5000)
        libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f904b7d5000)
        libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f904b6ed000)
        libdl.so.2 => /lib/x86_64-linux-gnu/libdl.so.2 (0x00007f904b6e5000)
        /lib64/ld-linux-x86-64.so.2 (0x00007f904bdcd000)

Screenshots (if appropriate):

Checklist:

• I followed the contributing guidelines and code of conduct.
• I have added a relevant changelog to CHANGELOG.md
• I have added tests to cover my changes.
• I have updated the documentation accordingly.

[tkxkd0159]

LGTM