✨ Chumsky Parser

* added lexer

* added parser (wip)

* added instructions

* cleanup

* added abi types (wip)

* extracted `Span`

* fix

* fixed `sol_type` parser

* use choice instead of or

* or to choice

* dropped old grammar

* added parse method

* dropped clap for argh

* ci on pr

* cleanup

* refactored ast to separate mod

* support public/external, view/pure, payable/nonpayable keywords in sol function definitions

* simplify instruction parser

* updated lexing error handling

* added ariadne (utf8-not working)

* fixed span positions of src with utf8 chars

* return parser errors in `parse`

---------

Co-authored-by: lmittmann <[email protected]>

.github/workflows/ci.yml

@@ -1,5 +1,5 @@
 name: Rust CI
-on: [push]
+on: [push, pull_request]
 
 env:
   CARGO_TERM_COLOR: always
@@ -49,4 +49,4 @@ jobs:
           cache-on-failure: true
       - name: build
         id: build
-        run: cargo build --workspace --all --locked 
+        run: cargo build --workspace --all --locked