Implement app streams: stdio for apps (#640)

Implement file IO for applications to facilitate text input/output capturing.

Apps can now launch apps and:
- Read their stdio output
- Write to their stdio input

Tactility/Source/AppStdioWrap.cpp

@@ -0,0 +1,24 @@
+// SPDX-License-Identifier: Apache-2.0
+#ifdef ESP_PLATFORM
+
+#include <app/io.h>
+
+#include <sys/types.h>
+
+extern "C" {
+
+ssize_t __wrap_read(int fd, void* buffer, size_t size) {
+    return app_io_read(fd, buffer, size);
+}
+
+ssize_t __wrap_write(int fd, const void* buffer, size_t size) {
+    return app_io_write(fd, buffer, size);
+}
+
+int __wrap_close(int fd) {
+    return app_io_close(fd);
+}
+
+}
+
+#endif // ESP_PLATFORM