updated compiler to support multiple frontends and backends

compiler/src/backend/dsa/mod.rs

@@ -0,0 +1,9 @@
+use crate::model::{CompilerError, Program};
+
+mod codegen;
+mod registers;
+
+pub fn generate_code(ast: &Program) -> Result<String, CompilerError> {
+    let mut codegen = codegen::CodeGenerator::new(ast.clone());
+    codegen.generate()
+}