feat(gui): import file to GUI and name scopes (#30)

* import to GUI and name scopes

* remove unecessary dependency

Author: rohanku

.gitignore

@@ -1,3 +1,6 @@
+### Argon ###
+*.gui
+
 ### Linux ###
 *~
 

Cargo.lock

@@ -30,9 +30,7 @@ cell top() {
     eq(right.x, 300.);
     eq(right.y, 0.);
   }
-  #scope1
   if 1 > 2 { } else { }
   let met3 = rect("met3", x0=left.bot.met1.x0, y0=20., x1=right.bot.met1.x1, y1=80.)!;
   let duplicate_rect = left.bot.met3!;
 }
-

core/compiler/examples/nested_inst.ar

@@ -237,8 +237,8 @@ Expr -> Result<Expr<'input, ParseMetadata>, ()>
   ;
 
 BlockExpr -> Result<Expr<'input, ParseMetadata>, ()>
-  : 'IF' Expr Scope 'ELSE' Scope { Ok(Expr::If(Box::new(IfExpr { scope_annotation: None, cond: $2?, then: Expr::Scope(Box::new($3?)), else_: Expr::Scope(Box::new($5?)), span: $span, metadata: (), }))) }
-  | ScopeAnnotation 'IF' Expr Scope 'ELSE' Scope { Ok(Expr::If(Box::new(IfExpr { scope_annotation: Some($1?), cond: $3?, then: Expr::Scope(Box::new($4?)), else_: Expr::Scope(Box::new($6?)), span: $span, metadata: (), }))) }
+  : 'IF' Expr Scope 'ELSE' Scope { Ok(Expr::If(Box::new(IfExpr { scope_annotation: None, cond: $2?, then: $3?, else_: $5?, span: $span, metadata: (), }))) }
+  | ScopeAnnotation 'IF' Expr Scope 'ELSE' Scope { Ok(Expr::If(Box::new(IfExpr { scope_annotation: Some($1?), cond: $3?, then: $4?, else_: $6?, span: $span, metadata: (), }))) }
   | Scope { Ok(Expr::Scope(Box::new($1?))) }
   ;