Update to .NET 8

[andrew-welker]

• fix: update package references and clean up unused imports
• fix: update target frameworks and package references; change culture to InvariantCulture
• feat: implement WebSocket classes and update culture settings; bump PepperDashCore version
• fix: update target framework to net8 and bump PepperDashCore version to 2.0.0-alpha-462
• wip: address performance issues in plugin loading and versioning
• feat: enhance plugin dependency management in PluginLoader
• fix: update condition for CPZ copy target and remove obsolete workflows
• fix: adjust installation steps for prerequisites based on environment detection
• wip: package updates
• docs: add XML comments
• chore: fix issues related to remving crestron usings
• docs: update XML docs
• feat: modify plugin loading process
• chore: move all files to file-scoped namespace
• feat: remove context file for storing values
• feat: modify factory loading
• chore: update local build version

[Copilot]

Pull Request Overview

The PR upgrades the codebase to .NET 8, converts all namespaces to C# file-scoped syntax, and enhances plugin loading with .NET 8 compatibility checks.

• Update project to target .NET 8 and bump package references
• Convert all namespace { } blocks to file-scoped namespace X;
• Revamp PluginLoader to perform assembly compatibility analysis and track incompatible plugins

Reviewed Changes

Copilot reviewed 300 out of 573 changed files in this pull request and generated 1 comment.

File	Description
*.csproj	Changed <TargetFramework> to net8 and updated package refs
All .cs files	Converted block namespaces to file-scoped namespace X;
PluginLoader.cs	Rewrote plugin loading logic, added .NET 8 compatibility checks, revamped collections initialization

Comments suppressed due to low confidence (5)

src/PepperDash.Essentials.Core/PepperDash.Essentials.Core.csproj:6

• The TargetFramework identifier should follow the format 'netX.Y' (e.g., 'net8.0') rather than 'net8'.

    <TargetFramework>net8</TargetFramework>

src/PepperDash.Essentials.Core/Plugins/PluginLoader.cs:105

• Square-bracket collection expressions initialize arrays, not List. Use 'new List()' to instantiate the list.

        LoadedAssemblies = [];

src/PepperDash.Essentials.Core/Plugins/PluginLoader.cs:106

• Square-bracket collection expressions initialize arrays, not List. Use 'new List()' to instantiate the list.

        LoadedPluginFolderAssemblies = [];

src/PepperDash.Essentials.Core/Plugins/PluginLoader.cs:107

• Square-bracket collection expressions initialize arrays, not List. Use 'new List()' to instantiate the list.

        EssentialsPluginAssemblies = [];

src/PepperDash.Essentials.Core/Plugins/PluginLoader.cs:108

• Square-bracket collection expressions initialize arrays, not List. Use 'new List()' to instantiate the list.

        IncompatiblePlugins = [];