Integrate many changes from master

lib/obp60task/ImageDecoder.cpp

@@ -0,0 +1,23 @@
+#include "ImageDecoder.h"
+#include <mbedtls/base64.h>
+
+// Decoder for Base64 content
+bool ImageDecoder::decodeBase64(const char* base64, size_t base64Len, uint8_t* outBuffer, size_t outSize, size_t& decodedSize) {
+    if (base64 == nullptr) {
+        decodedSize = 0;
+        return false;
+    }
+    int ret = mbedtls_base64_decode(
+        outBuffer,
+        outSize,
+        &decodedSize,
+        (const unsigned char*)base64,
+        base64Len
+    );
+    return (ret == 0);
+}
+
+// Decoder for Base64 content
+bool ImageDecoder::decodeBase64(const String& base64, uint8_t* outBuffer, size_t outSize, size_t& decodedSize) {
+    return decodeBase64(base64.c_str(), base64.length(), outBuffer, outSize, decodedSize);
+}