adds dotnet 8 due to compatiblity issues with existing project

[PTKu]

This pull request includes several updates to version numbers and project configurations to ensure consistency and correctness across multiple solution files. The most important changes include updating the versions of AXSharp tools, modifying project GUIDs, and correcting project configurations to ensure proper build configurations for both Debug and Release modes.

Version Updates:

• Updated AXSharp.ixc, AXSharp.ixd, and AXSharp.ixr tools to version 0.22.0-alpha.288 in .config/dotnet-tools.json. [1] [2]

Project Configuration Updates:

• Changed the project GUID for AXOpen-L1-tests, AXOpen-L2-tests, AXOpen-L3-tests, and AXOpen projects to {9A19103F-16F7-4668-BE54-9A1E7A4F7556} in their respective solution files. [1] [2] [3] [4]
• Added Release configuration for AXOpen-L1-tests, AXOpen-L2-tests, AXOpen-L3-tests, and AXOpen projects in their respective solution files. [1] [2] [3] [4]

Project Naming and Path Corrections:

• Corrected project names and paths for AXOpen.Components.Siemens.Identification to AXOpen.Components.Siem.Identification in src/AXOpen.sln. [1] [2]

New Project Additions:

• Added PlcSimAdvancedStarterTool project to src/AXOpen.sln. [1] [2]

Build Configuration Updates:

• Updated build configurations to ensure projects are correctly set to build in both Debug and Release modes in src/AXOpen.sln. [1] [2] [3] [4]