Support for efficient (asynchronous) loading with application buffers about flecs HOT 5 CLOSED

There are is consistent API so far:

1. ecs_buffer_new - creates type for given signature.
2. ecs_buffer_delete - alias for ecs_delete_type. (?)
3. ecs_buffer_fetch - copies data from the world into a buffer for given entity range.
4. ecs_buffer_flush - copies data from the buffer into a world for the given entity range.
   • For given entity buffer changes table type from BYOB to regular. (?)
   • For given component buffer changes only table data. (?)
5. ecs_buffer_bind - adds entities/components into world
6. ecs_buffer_unbind - removes entities/components from world
7. ecs_buffer_begin - returns entity/component begin iterator
8. ecs_buffer_end - returns entity/component end iterator

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I'm closing this issue, as it (the problem of inserting large amounts of data) has been addressed with the ecs_set_w_data API.

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How to delete unmanaged when I don't need it in the application side?

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How to export unmanaged for selected entities(range)?

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@ArnCarveris deleting a type is a feature that still needs to be added. When it's added, you will be able to do:

ecs_delete_type(world, byob_type);

Exporting entities (snapshotting) is something I haven't really thought about for too long, but I think this should be possible with regular systems. Systems already receive pointers to component buffers, so it could simply take those, and store them in whatever way it sees fit.

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