Porting Third Party Crates

I was wondering what is required to use a third party crate with this sdk.
For example wasmer-runtime.
I know that there exists a repo with forked crates, but I wanted to know if it was possible to do the porting myself.

When I try to use Wasmer inside an enclave I get the duplicate lang item errors:

```
error: duplicate lang item in crate `std` (which `wasmer_runtime` depends on): `f32_runtime`.
|
= note: first defined in crate `sgx_tstd` (which `sgx_addition` depends on).

error: duplicate lang item in crate `std` (which `wasmer_runtime` depends on): `f64_runtime`.
|
= note: first defined in crate `sgx_tstd` (which `sgx_addition` depends on).

error: duplicate lang item in crate `std` (which `wasmer_runtime` depends on): `panic_impl`.
|
= note: first defined in crate `sgx_tstd` (which `sgx_addition` depends on).

error: duplicate lang item in crate `std` (which `wasmer_runtime` depends on): `begin_panic`.
|
= note: first defined in crate `sgx_tstd` (which `sgx_addition` depends on).

error: duplicate lang item in crate `std` (which `wasmer_runtime` depends on): `oom`.
|
= note: first defined in crate `sgx_tstd` (which `sgx_addition` depends on).
```

Start by reviewing the existing repository of forked crates and the sgx_tstd and sgx_addition dependencies mentioned in the error. Reproduce the wasmer_runtime integration inside an enclave and investigate the duplicate lang item failures. Done would be a documented, confirmed procedure for porting a third-party crate, or a clear explanation of why this integration is unsupported.

Written by the indexing model from the issue text.