[nemo-qml-plugin-email] Move attachment model to be accessible via em…

…ail message. JB#61916

Merge pull request #22 from sailfishos/qmltypes

[nemo-qml-plugin-email] Update qmltypes. JB#60027

[nemo-qml-plugin-email] Fix attachment initial download status. JB#61742

[nemo-qml-plugin-email] Simplify email message construction. Fixes JB…

…#61661

[nemo-qml-plugin-email] Store attachments directly to Downloads. JB#5…

…0257

[nemo-qml-plugin-email] Expose file sizes with separate getter on att…

…achment model. JB#61390

[nemo-qml-plugin-email] Set response type on sent email. Fixes JB#61214

[nemo-qml-plugin-email] Expose replied, repliedAll and forwarded stat…

…us. JB#61205

[nemo-qml-plugin-email] Detect attachnent deletion. JB#37332

[nemo-qml-plugin-email] Simpliy attachment handling. Fixes JB#61190