Add Composer autoloading functions and PHPStan for testing

vendor/nikic/php-parser/test/code/parser/stmt/tryWithoutCatch.test

@@ -0,0 +1,29 @@
+Cannot use try without catch or finally
+-----
+<?php
+
+try {
+    foo();
+}
+-----
+Cannot use try without catch or finally from 3:1 to 5:1
+array(
+    0: Stmt_TryCatch(
+        stmts: array(
+            0: Stmt_Expression(
+                expr: Expr_FuncCall(
+                    name: Name(
+                        parts: array(
+                            0: foo
+                        )
+                    )
+                    args: array(
+                    )
+                )
+            )
+        )
+        catches: array(
+        )
+        finally: null
+    )
+)