feat: initial parser implementation

src/main/wacc/Main.scala

@@ -1,5 +1,6 @@
 package wacc
 
+import parsley.{Failure, Success}
 import scopt.OParser
 import java.io.File
 
@@ -28,6 +29,13 @@ val cliParser = {
   )
 }
 
+def compile(contents: String): Int = {
+  parser.parse(contents) match {
+    case Success(x)   => 0
+    case Failure(msg) => 100
+  }
+}
+
 def main(args: Array[String]): Unit =
   OParser.parse(cliParser, args, CliConfig()) match {
     case Some(config) =>