Fix various warnings which become fatal with later gcc versons in esp-idf 5.x (#1268)

- we cannot use partial initialisation of structs in C++ files (copied from example C files initially it seems)
- IRAM_ATTR uses a COUNTER, do not use the attribute on the implementation
- provide missing copy implementations for Rgb and Hsv
- one no longer can |= on volatile variables; use = | instead
- fix project and header includes
- avoid redefining BLINK_GPIO
- Remove defined but unused variables
- Fix printf formats
- Add missing case statement (HTTP_EVENT_REDIRECT)
- RMT needs to be updated to new interface (CONFIG_RMT_SUPPRESS_DEPRECATE_WARN is on currently; see https://docs.espressif.com/projects/esp-idf/en/release-v5.0/esp32/api-reference/peripherals/rmt.html)
- Adjust tcpip_adpater_* to esp_netif_*
- Use buffered versions of *ntoa* functions for IPv4 addresses and not a static on the stack (also fixes warnings)
- Whatever I missed

Co-authored-by: Bjoern A. Zeeb <patch@zabbadoz.net>

code/main/main.cpp

@@ -46,6 +46,9 @@ extern const char* BUILD_TIME;
 #include "server_GPIO.h"
 
 
+#ifdef BLINK_GPIO
+#undef BLINK_GPIO
+#endif
 #define BLINK_GPIO GPIO_NUM_33
 
 static const char *TAGMAIN = "main";
@@ -88,11 +91,10 @@ bool Init_NVS_SDCard()
     // Options for mounting the filesystem.
     // If format_if_mount_failed is set to true, SD card will be partitioned and
     // formatted in case when mounting fails.
-    esp_vfs_fat_sdmmc_mount_config_t mount_config = {
-        .format_if_mount_failed = false,
-        .max_files = 7,                         // anstatt 5 (2022-09-21)
-        .allocation_unit_size = 16 * 1024
-    };
+    esp_vfs_fat_sdmmc_mount_config_t mount_config;
+    mount_config.format_if_mount_failed = false;
+    mount_config.max_files = 7;                         // anstatt 5 (2022-09-21)
+    mount_config.allocation_unit_size = 16 * 1024;
 
     // Use settings defined above to initialize SD card and mount FAT filesystem.
     // Note: esp_vfs_fat_sdmmc_mount is an all-in-one convenience function.