Added start of infra to runner.d

runner.d

@@ -11,12 +11,57 @@ import std.process;
 import std.stdio;
 import std.string;
 import std.uni;
+import core.thread;
+
+int main() {
+    bool running = true;
+    writeln("Gymboard CLI: Type \"help\" for more information. Type \"exit\" to exit the CLI.");
+    while (running) {
+        string[] commandAndArgs = readln().strip.split!isWhite;
+        if (commandAndArgs.length == 0) continue;
+        string command = commandAndArgs[0].toLower();
+        if (command == "help") {
+            showHelp();
+        } else if (command == "exit") {
+            running = false;
+        } else if (command in commands) {
+            commands[command](commandAndArgs.length > 1 ? commandAndArgs[1 .. $] : []);
+        } else {
+            writefln!"Unknown command \"%s\"."(command);
+        }
+    }
+    writeln("Goodbye!");
+    return 0;
+}
 
 alias CommandFunction = void function(string[] args);
 
-int main() {
-    while (true) {
-        string[] command = readln().split!isWhite;
+CommandFunction[string] commands;
+
+void registerCommand(string name, CommandFunction func) {
+    commands[name] = func;
+}
+
+void showHelp() {
+    writeln(q"HELP
+Gymboard CLI: A tool for streamlining development.
+
+Commands:
+
+help                    Shows this message.
+exit                    Exits the CLI, stopping any running services.
+HELP");
+}
+
+class ProcessRunner : Thread {
+    private Pid processId;
+
+    public this(ProcessPipes pipes) {
+        super(&this.run);
+        this.processId = pipes.pid();
+    }
+
+    private void run() {
 
     }
 }