[Fix] Encoding array of static size bytes

[peerasak-u]

Resolve #291

Summary:

• Add property rawData: Data and open init function to public in Data1 to Data32
• Add case for Data1 to Data32 in public static func encode(_ value: ABIType, staticSize: Int? = nil, packed: Bool = false) throws -> EncodedValue

[dioKaratzas]

@peerasak-u Well done!
Please run scripts/prepareForPush.sh to reformat the code then commit/push.