MT103: Support

[pmishra]

Can you please support mt103 file format also? Thanks

[qoomon]

do you have a documentation for this format somewhere?

[qoomon]

@pmishra may you can provide the documentation for MT103

[qoomon]

@pmishra I need the documentation of MT103

[qoomon]

could you confirm this specifications -> https://www.paiementor.com/swift-mt103-format-specifications/