Refactor WASM runner and logging functionality; add heartbeat task and improve initialization process

software/init.zig

@@ -1,9 +1,10 @@
-extern "nova64" fn yield(timeout_ms: u32) void;
+const nova64 = @import("nova64.zig");
 
 pub fn main() void {
     _ = add(1, 2);
     while (true) {
-        yield(16); // Yield for 1 second
+        nova64.log("Hello from Zig!");
+        // nova64.yield(1000);
     }
 }