Add the StrictBinaryUTF8 and DeleteDeprecatedFunctions Meson options

JSON_StrictBinaryUTF8 (#5741) and JSON_DeleteDeprecatedFunctions (#5755)
arrived with develop but were missing from the Meson build and the
pkg-config file, so check_build_options failed. Both Meson options
default to false and add JSON_STRICT_BINARY_UTF8=1 and
JSON_DELETE_DEPRECATED_FUNCTIONS=1 to the dependency, the pkg-config
file, and the generated CMake target; CMake's pkg-config file now
carries both definitions too. The ci_meson_install job sets and checks
them in its non-default install.

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

docs/mkdocs/docs/integration/package_managers.md

@@ -133,7 +133,8 @@ subproject fallback, rather than using the subproject directly.
 The options that change the library's configuration are available in Meson as well, named like the
 [CMake options](cmake.md#cmake-options) without the `JSON_` prefix: `MultipleHeaders`, `GlobalUDLs`,
 `ImplicitConversions`, `DisableEnumSerialization`, `DisableTupleReferenceConversion`, `Diagnostics`,
-`Diagnostic_Positions`, `LegacyDiscardedValueComparison`, and `StrictNulHandling`. They have the same defaults as in CMake, except that
+`Diagnostic_Positions`, `LegacyDiscardedValueComparison`, `StrictNulHandling`, `StrictBinaryUTF8`, and
+`DeleteDeprecatedFunctions`. They have the same defaults as in CMake, except that
 `MultipleHeaders` is `false`. Set them with `-D` when setting up the build, or with the subproject name as prefix when
 the library is used as a subproject: