Add function to verify raw terminal contents

/** API to create exercises */

import { getTerminalContents, runCommand, runUnexecutedCommand } from "./jslinux.api.mjs"

import { getTerminalContents, getRawTerminalContents, runCommand, runUnexecutedCommand } from "./jslinux.api.mjs"

import { arrayEquals } from "./util.mjs"

import { getHandInToken } from "./snakeoil.mjs"

import { State } from "./state.mjs"

                })

            },

            /**

             * Verify that the terminal contains the given line somewhere.

             * "Somewhere" might be a user input, a prompt, a line in an editor or something.

             * 

             * Normally, you'll probably want to use hasOutput(...) instead, because it ensures that the expected

             * line is found in an actual command's output. This command here is likely only useful when you

             * want to accept solutions where the line is displayed by an editor or pager, at the cost of

             * the user being able to trick you by just typing the solution as input.

             *  

             * @param {String} line A line of text that should be contained in the terminal

             */

            terminalContains(line) {

                // Wait until the VM has processed the input and written some output to the terminal

                commandPromise.then(async () => {

                    const terminalContents = getRawTerminalContents()

                    const result = terminalContents.includes(line)

                    await clear()

                    verifyHandler(result)

                })

            },

            /**

             * Verify the command matches a certain condition.

             * 

        await this.manualConfirmation()

        this.verify().hasOutput("Colorless green ideas sleep furiously")

        this.verify().terminalContains("Colorless green ideas sleep furiously")

    })

    this.exercise("Datei umbenennen", async function () {