feat!: reserve keyword super (#4836)

# Description

## Problem\*

## Summary\*

This PR reserves the keyword `super` in prep for #4835 

## Additional Context



## Documentation\*

Check one:
- [ ] No documentation needed.
- [ ] Documentation included in this PR.
- [ ] **[For Experimental Features]** Documentation to be submitted in a
separate PR.

# PR Checklist\*

- [ ] I have tested the changes locally.
- [ ] I have formatted the changes with [Prettier](https://prettier.io/)
and/or `cargo fmt` on default settings.

compiler/noirc_frontend/src/lexer/token.rs

@@ -839,6 +839,7 @@ pub enum Keyword {
     ReturnData,
     String,
     Struct,
+    Super,
     Trait,
     Type,
     Unchecked,
@@ -883,6 +884,7 @@ impl fmt::Display for Keyword {
             Keyword::ReturnData => write!(f, "return_data"),
             Keyword::String => write!(f, "str"),
             Keyword::Struct => write!(f, "struct"),
+            Keyword::Super => write!(f, "super"),
             Keyword::Trait => write!(f, "trait"),
             Keyword::Type => write!(f, "type"),
             Keyword::Unchecked => write!(f, "unchecked"),
@@ -930,6 +932,7 @@ impl Keyword {
             "return_data" => Keyword::ReturnData,
             "str" => Keyword::String,
             "struct" => Keyword::Struct,
+            "super" => Keyword::Super,
             "trait" => Keyword::Trait,
             "type" => Keyword::Type,
             "unchecked" => Keyword::Unchecked,