add lil programs to test

cat.yarn

@@ -0,0 +1 @@
+{"protected":false,"mode":"f","metadata":{"name":"cat","author":"Luna Magdalena :3","version":[1],"dependencies":[],"runner":[],"paths":{"cat.js":"%B/cat.js"}},"content":"{\"cat.js\":{\"protected\":true,\"metadata\":{},\"mode\":\"f\",\"content\":\"program.autoOutput = false\\n\\nfor (let a of args) {\\n    let file\\n    try {\\n        file = io.open(a)\\n    } catch (e) {\\n        display.print(\\\"Cannot open file\\\", 0x9000)\\n    }\\n    if (file) {\\n        const lines = file.lines()\\n        for (let line of lines) {\\n            io.output(\\\"%n\\\" + line)\\n            display.print(line, itty.baseStyle, false)\\n        }\\n    }\\n}\\n    \\nquit()\"}}"}