Niels Lohmann 274be40921 Document insert() and erase() of editable json_documents ...

Add API reference pages for basic_json_document::insert and
basic_json_document::erase, matching the style of set.md and
push_back.md: signatures, parameters, return values, exception safety,
exceptions with their exact ids and messages, complexity, notes on
duplicate keys and view/iterator validity, and an example.

Add example programs basic_json_document__insert.cpp and
basic_json_document__erase.cpp with their expected output, each
comparing an edit on an editable document with the same edit on a
plain json value to show what is preserved: member order, the
spelling of untouched numbers, and, for insert, that a view taken
before the insert keeps referring to the same element after its index
shifts.

Register both new pages in mkdocs.yml, docSet.sql, and the member list
of basic_json_document/index.md, add cross-references to them from
set.md and push_back.md, and mention insert/erase in the "Editing a
document" section of features/json_view.md.

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

2026-09-30 15:09:14 +02:00

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