[SDL 0124] SDLImageUploadManager

[theresalech]

Proposal: SDLImageUploadManager

Currently the logic SDL applications must implement to manage image uploads is tedious and error prone. The typical implementation is rewriting images using the same filename any time the image needs to be shown, or uploads all images at launch and never verifies their existence before calling a Show request. This proposal aims to centralize image management logic, optimize uploads with a local cache when possible, and generally move all image management responsibilities into the proxy.

Review: smartdevicelink/sdl_evolution#366

Steering Committee Decision:

The Steering Committee voted to accept this proposal with revisions. The revisions are outlined in the last comment from joeljfischer. There was also discussion about the relationship between this proposal and SDL 0133 - Enhanced iOS Proxy Interface. It was ultimately determined that this proposal could be accepted with revisions as it is relatively low level in comparison with SDL 0133, but the scope of this proposal would also be considered during the Enhanced iOS Proxy Interface workshop.

The proposal .md was updated on February 9, 2018 to include the agreed upon revisions.

[theresalech]

Closed via #874