Neomodel

* Fix filter() causing performance problems

* Add Size() scalar function
* Fix potential duplicate variable name in multiple traversals
* Minor fixes
* Note : With Neo4j now using CalVer, we can soon shift to true SemVer

* Add support for Neo4j Rust driver extension : pip install neomodel[rust-driver-ext]
* Add initial_context parameter to subqueries
* NodeNameResolver can call self to reference top-level node
* Housekeeping : implementing mypy for static typing

* Add support for Cypher parallel runtime
* Add options for intermediate_transform : distinct, include_in_return, use a prop as source

* Traversal option for filtering and ordering
* Insert raw Cypher for ordering
* Possibility to traverse relations, only returning the last element of the path
* Resolve the results of complex queries as a nested subgraph
* Possibility to transform variables, with aggregations methods : Collect() and Last()
* Intermediate transform, for example to order variables before collecting
* Subqueries (Cypher CALL{} clause)
* Allow JSONProperty to actually use non-ascii elements. Thanks to danikirish
* Bumped neo4j (driver) to 5.26.0
* Special huge thanks to tonioo for this release

* Fixes vector index doc and test