feat: add help command with available commands list

src/commands/help.ts

@@ -0,0 +1,37 @@
+const helpObj = {
+  commands: [
+    ["'about'", "Who am I?"],
+    ["'whoami'", "A perplexing question."],
+    ["'su'", ";D"],
+    ["'banner'", "Display the banner."],
+    ["'clear'", "Clear the terminal."],
+  ],
+};
+
+const createHelp = (): string[] => {
+  const help: string[] = [];
+  help.push("<br>");
+
+  helpObj.commands.forEach((ele) => {
+    const SPACE = "&nbsp;";
+    let string = "";
+    string += SPACE.repeat(2);
+    string += "<span class='command'>";
+    string += ele[0];
+    string += "</span>";
+    string += SPACE.repeat(17 - ele[0].length);
+    string += ele[1];
+    help.push(string);
+  });
+
+  help.push("<br>");
+  help.push("Press <span class='keys'>[Tab]</span> for auto completion.");
+  help.push("Press <span class='keys'>[Esc]</span> to clear the input line.");
+  help.push(
+    "Press <span class='keys'>[↑][↓]</span> to scroll through your history of commands."
+  );
+  help.push("<br>");
+  return help;
+};
+
+export const HELP = createHelp();