Code improvements / Fix warnings

- Fix CodeQL warnings
- Port lots of improvements/fixes from PR #225
- replace 'array_hexstr' and '%*H' format by sdk function 'format_hex'
- Add 'noreturn' attribute in 'main.c'

src_features/provideNFTInformation/cmd_provideNFTInfo.c

@@ -137,7 +137,7 @@ void handleProvideNFTInformation(uint8_t p1,
     offset += CHAIN_ID_SIZE;
 
     uint8_t keyId = workBuffer[offset];
-    uint8_t *rawKey;
+    const uint8_t *rawKey;
     uint8_t rawKeyLen;
 
     PRINTF("KeyID: %d\n", keyId);
@@ -146,7 +146,7 @@ void handleProvideNFTInformation(uint8_t p1,
         case STAGING_NFT_METADATA_KEY:
 #endif
         case PROD_NFT_METADATA_KEY:
-            rawKey = (uint8_t *) LEDGER_NFT_METADATA_PUBLIC_KEY;
+            rawKey = LEDGER_NFT_METADATA_PUBLIC_KEY;
             rawKeyLen = sizeof(LEDGER_NFT_METADATA_PUBLIC_KEY);
             break;
         default: