add wasmtime to runtime config

[FrankYang0529]

resolve #389

[FrankYang0529]

Hi @lann, I moved wasmtime cache-related parameters from the spin up command to runtime_config and also added wasm_backtrace_details config. I would like to check which wasmtime config we want to put in our runtime_config? Thanks.

https://docs.rs/wasmtime/latest/src/wasmtime/config.rs.html#175-200