Runefile Parsing about rune

[kthakore]

Started working on the parser:

1. Looked up pest
2. Considering replicating https://github.com/HewlettPackard/dockerfile-parser-rs/

Next steps:

1. Fork dockerfile-parser-rs and implement runefile-parser-rs
2. Implement FROM, CAPABILITY, OUT etc

[kthakore]

@Ge-te

Take a look at this https://pest.rs/#editor
Let's look at https://github.com/HewlettPackard/dockerfile-parser-rs and make another library.

https://github.com/hotg-ai/runefile-parser

Track on https://github.com/hotg-ai/runefile-parser/issues/1

[Ge-te]

@kthakore
Made simple parser implementation:
https://github.com/hotg-ai/rune/tree/pest-implementation

Next step is implementing the dockerfile-parser and adapting to Runefile

[Michael-F-Bryan]

Finished in #27.