appinfo 0.1.2

Macro to derive appinfo at compile time using cargo compile-time env vars and `clap-rs`.
Documentation 
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<p align="center">
    <img width="400" alt="AppInfo Logo" src="https://raw.githubusercontent.com/l-const/appinfo-rs/master/appinfo-logo.png">
    <p align="center">
    <a href="https://crates.io/crates/appinfo">
        <img
      src="https://img.shields.io/crates/v/appinfo?style=flat-square"
      alt="Crates.io version"
  /></a>
    <h5 align="center">A procedural macro to derive application info at compile time, using cargo compile-time env vars and `clap-rs`.</h5>
 </p>
</p>



### Usage

```rust
#[appinfo::main]
fn main(){
    println!("hello world");
    cli.do_stuff();
    server.listen(3000);
}
```

##### Add clap:
```bash
cargo add clap
cargo add appinfo
```

then in a terminal do:

```bash
Example:
❯ ./wonderful-cli -h
wonderful-cli (version: 0.1.0, commit revision: 0.1.0, repository: https://github.com/l-const/wonderful-cli) - A cli app that utilises the appinfo macro.
```


### Details: 
* All the info are retrieved at compile time.
* Default env vars: https://doc.rust-lang.org/cargo/reference/environment-variables.html#environment-variables-cargo-sets-for-crates
* For more, see here: https://github.com/l-const/appinfo-rs/blob/main/src/cli.rs#L5-L9

### Future Enhacements

- [ ] Validation logic that the macro is applied only in `main`.
- [ ] Override of vars through the macro args.
- [ ] Overridable execution/usage info.
- [ ] Git commit revision using a compile/build time env var.