Refactored code structure

src/build/core/CompileAllFunctions.go

@@ -0,0 +1,19 @@
+package core
+
+import "sync"
+
+// CompileAllFunctions starts a goroutine for each function compilation and waits for completion.
+func CompileAllFunctions(functions map[string]*Function) {
+	wg := sync.WaitGroup{}
+
+	for _, function := range functions {
+		wg.Add(1)
+
+		go func() {
+			defer wg.Done()
+			function.Compile()
+		}()
+	}
+
+	wg.Wait()
+}