Proc macro for Windows DllMain entry point
Make the proc macro send in the hinstDLL, needed for injected applications to be able to free themselves.
cargo.toml
```Toml
[lib]
crate-type = ["cdylib"]
[dependencies] winapi = { version = "0.3.9", features = ["consoleapi", "processthreadsapi"] } bootstraps = { version = "0.1.1" } ```
lib.rs
```Rust
fn dll_main() { println!("Hi from DllMain") } ```