Fix `take`/`drop` KDocs

[Allex-Nik]

CommonTakeAndDropDocs and CommonTakeAndDropWhileDocs hold the common docs for drop and take.

1. @return is inverted for the drop* functions

The generated @return is correct for take, but not for drop.
Following the templates, the KDocs for the operations from drop.kt say:
Returns: A `ColumnSet` containing the first/last [`n`] columns.
But for the drop* operations it is the other way around: they return everything except those columns.

Suggestion: add a RETURN key to both templates, set separately from take.kt and drop.kt, or a smaller variable for the containing / without part (by @Jolanrensen).

2. *While docs don't say that the run stops at the first non-matching column

For dropWhile/dropColsWhile/dropLastWhile/dropLastColsWhile, the KDocs say:
"This function drops the first/last columns from this adhering to the given predicate collecting
the result into a ColumnSet."
It might not be obvious to the reader that dropping stops with the first element that does not adhere to the predicate (and it is not like "take/drop the first/last n columns).

Suggestion: the meaning would be clearer if the KDocs mentioned something like:
This function keeps dropping the first/last columns from [this] and stops once the given predicate does not hold... (by @Jolanrensen).

The same goes for takeWhile/takeColsWhile/takeLastWhile/takeLastColsWhile

3. drop(Last) and take(Last) on DataColumn have no KDocs

4. No See also sections in take.kt and drop.kt

Neither drop.kt, take.kt, nor the shared templates contain @see or See also section.
Related operations should link to each other. For example, drop can point to take and the other way around, including their Last/Cols/While variants.

Scope

• core/.../documentation/CommonTakeAndDropDocs.kt
• core/.../documentation/CommonTakeAndDropWhileDocs.kt
• core/.../api/drop.kt
• core/.../api/take.kt

Acceptance criteria

• @return is correct for all drop* functions while staying correct for take*.
• *While KDocs state that dropping/taking stops at the first non-matching column, for both
  take and drop.
• drop(Last) and take(Last) on DataColumn have KDocs.
• Every function in the take/drop family has a See also section linking to its counterparts.