feat: add 0xf8 feature report to get firmware version and add config version

src/cmd.cpp

@@ -14,7 +14,8 @@
 
 bool is_pico_cmd(uint8_t report_id) {
     if (report_id == 0xf6 ||
-        report_id == 0xf7
+        report_id == 0xf7 ||
+        report_id == 0xf8
     ) {
         return true;
     }
@@ -31,6 +32,12 @@ uint16_t pico_cmd_get(uint8_t report_id, uint8_t *buffer, uint16_t reqlen) {
         memcpy(buffer,&get_config(),len);
         return len;
     }
+    if (report_id == 0xf8) {
+        printf("[HID] Receive 0xf8 getting firmware version\n");
+        const auto len = std::min(strlen(PICO_PROGRAM_VERSION_STRING), static_cast<size_t>(reqlen));
+        memcpy(buffer, PICO_PROGRAM_VERSION_STRING, len);
+        return len;
+    }
     return 0;
 }