Reopen Diff and add "ItemX" for each item (where X is the item's index within the tuple).

In D10889#205035, @segfaultxavi wrote:

Cool! Renders nicely with DocFX.

Removed whitespace changes.

Looks like we should not be using tuples as return values after all. It is recommended to use a explicit class, with proper fields and docs.

csharp: Add 'since' documentation to deconstruct.

Fix wrong generate_deconstruct_method return (shouldn't be negated).

Add "Depends on D10801."

Switch unused struct_.fields to attributes::unused.

In D10809#204222, @lauromoura wrote:

Shouldn't this be applied on top of D10801? It fails with a conflict in the struct_definition.hh blocks.

Squash commits into just one.

• csharp: Fix missing comparison in test.

• csharp: Fix test for complex struct packing.

Just fix lines eina_error.cs:{158,174} and eldbus_common.cs:1554: "an event" (since "e" is a vowel sound - check here).

I've got the following compilation error:

Add tests and remove implicit conversion for 1-field structs.

Going to add some tests.

I was working on this task, but then I ran into a problem with generating tuples for structs with too many fields. More specifically, after generating: