Added Pi PIcoW support in the following modes:

- Companion Radio over USB Serial
- Repeater
- Room Server
- Terminal Chat

src/helpers/CommonCLI.cpp

@@ -24,7 +24,11 @@ void CommonCLI::loadPrefs(FILESYSTEM* fs) {
 }
 
 void CommonCLI::loadPrefsInt(FILESYSTEM* fs, const char* filename) {
+#if defined(RP2040_PLATFORM)
+  File file = fs->open(filename, "r");
+#else
   File file = fs->open(filename);
+#endif
   if (file) {
     uint8_t pad[8];
 
@@ -72,6 +76,8 @@ void CommonCLI::savePrefs(FILESYSTEM* fs) {
 #if defined(NRF52_PLATFORM)
   File file = fs->open("/com_prefs", FILE_O_WRITE);
   if (file) { file.seek(0); file.truncate(); }
+#elif defined(RP2040_PLATFORM)
+  File file = fs->open("/com_prefs", "w");
 #else
   File file = fs->open("/com_prefs", "w", true);
 #endif