docs: ecore: document missing structs

src/lib/ecore/ecore_exe.eo

@@ -13,6 +13,7 @@ struct Ecore.Exe.Event_Data.Line
  */
 struct Ecore.Exe.Event_Data
 {
+   [[Ecore exe event data structure]]
    exe: Efl.Object;  [[The handle to the process. FIXME: should actually be Ecore.Exe, workaround cyclic]]
    data: void_ptr; [[the raw binary data from the child process that was received]]
    size: int; [[the size of this data in bytes]]

src/lib/ecore/efl_loop.eo

@@ -1,7 +1,8 @@
 import efl_types;
 
 struct Efl.Loop.Arguments {
-   argv: const(array<const(stringshare)>);
+   [[EFL loop arguments data structure]]
+   argv: const(array<const(stringshare)>); [[Array with loop arguments]]
    initialization: bool; [[Set to $true when the program should initialize its internal state. This happen once per process instance.]]
 }