matthias/iridium-c: GTK+ 3.0 frontend for standard notes

Matthias Vogelgesang 376dbb4b2c Add test set with know password ...		7 lat temu
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dumps	376dbb4b2c Add test set with know password ...	7 lat temu
meson.build	9b75a46d1b Add test infrastructure	7 lat temu
test-crypto.c	376dbb4b2c Add test set with know password ...	7 lat temu
test.gresource.xml	376dbb4b2c Add test set with know password ...	7 lat temu