feat(cli): allow compiling with a specific prelude

[wongjiahau]

Purpose

This is necessary for running tests, for example we need a simple print function to print the result.

Example

kk run --prelude="./test_prelude.kk" test1.kk

[wongjiahau]

Based on rust-lang/rfcs#890, it seems a bad idea to allow user to define this, however that's assuming that glob imports are allowed.