Fix parsing of functions

src/parsing.cpp

@@ -83,7 +83,7 @@ namespace parsing {
 
             stream.m_position = inner.m_position;
 
-            auto fun = new AST::Function{ std::move(type), {}, "main", std::move(statements) };
+            auto fun = new AST::Function{ std::move(type), {}, name_token.content, std::move(statements) };
             return new std::unique_ptr<AST::TopLevelStatement>{ fun };
         }
         catch (std::runtime_error error) {

test.c

@@ -1,3 +1,3 @@
 int main() {
-    return 5;
+    return 15;
 }