Hiperspace 2.0.0

• net8.0

  • Microsoft.Bcl.HashCode (>= 6.0.0)
  • protobuf-net.Core (>= 3.2.45)
  • System.Numerics.Tensors (>= 9.0.0)

• net9.0

  • Microsoft.Bcl.HashCode (>= 6.0.0)
  • protobuf-net.Core (>= 3.2.45)
  • System.Numerics.Tensors (>= 9.0.0)

## Overview
This Version is a major refactor, taking into consideration lessons learned from implementing hyperspace with blazer web assembly.  It was hoped that .NET 9 would include greater compatibility with runtime type creation (used by protobuf-net for serialisation classes) or that protobuf-net "Ahead of time" (AOT) code generation would be included, but switching to direct protobuf serialization has the additional benefit of simplify usage with {Android, iOS, [Unity](https://unity.com/), zOS, [Meadow](https://www.wildernesslabs.co/)}. **Hiperspace** is the only domain-oriented object mapping technology that can be deployed into these environments, providing transparent sharing of elements between edge devices and server context.

The companion change to [HiLang](HiLang) includes the generation of serialization code for domain models.

### Security enhancement
Previously the predicates provided to **Horizon**  filters look an instance of an element and return true if it was within the horizon of the subspace.  This has been expanded to allow three types of Horizon Filter
* `new Horizon<Element_Type> ( element => element.Valid == true)'  a horizon predicate with the element only
* `new Horizon<Element_Type> ( (element, read) => element.Valid == true || read)'  a horizon predicate with a flag to indicate a read operation
* `new Horizon<Element_Type> ( (element, context, read) => element.Valid == true || read)'  a horizon predicate with a context parameter and a flag to indicate a read operation
* `new Horizon<Element_Type> ( (element, context, user, read) => element.Valid == true || user?.IsInRole("BULK"))'  a horizon predicate with a context parameter, user IPrinciple and a flag to indicate a read operation

Subspace has three labels added to support enhanced security

| Label name  | Description |
| ------------- | ------------- |
| Context        | Context that the space was opened with e.g. "Front Office", "Risk", "Settlement" |
| User           | an optional `IPrincipal` for access control |
| Remote     | Was the subspace opened remotely, and security/validation need to be re-applied on the server |


### Protobuf-net
[protobuf-net](protobuf-net) dependency for all .NET assemblies have been changed to [protobuf-net.Core](protobuf-net.Core) which does not include dynamic generation of serialization/deserialization code.

### Web applications

Web applications can take advantage of the HiperSpace shared between the web-client (or desktop applications) and the server session for the user with full lazy loading as required.

Hiperspace elements are transferred using [gRPC-Web](https://github.com/grpc/grpc-web)  for web-clients {browser, Android, iOS, [Unity](https://unity.com/)}  and [gRPC](https://grpc.io/) for desktop applications.
gRPC-Web packets are exchanged space efficient binary messages without JSON text conversion