[feature request] request a --wrap-inline-fns flag, for wrapping inline functions

[lulitao1997]

although currently we have generate-inline-functions, this flag requires user modify the build script and adding -fkeep-inline-functions flag, which is not supported by clang.

i'm wondering if we could generate c file by wrapping these inline functions, similar to --wrap-static-fns

i'm happy to submit a pull request for this.