Add .net10 support, remove dead code, rework how dlls are retrieved

[ScarletKuro]

.NET 10 broke the dotnet-resources-/ cache that we relied on to fetch reference assemblies for Roslyn compilation. There is no longer a blazor.boot.json, the boot config is now inlined inside dotnet.js https://learn.microsoft.com/en-us/aspnet/core/blazor/host-and-deploy/webassembly/bundle-caching-and-integrity-check-failures?view=aspnetcore-10.0

First I tried this approach (commit bb64f77): fetched _framework/dotnet.js at startup, parsed its embedded JSON to resolve fingerprinted assembly filenames (e.g. MudBlazor.abc123.dll), then fetched each DLL over HTTP to build Roslyn
MetadataReference objects. Complex and slow.

New approach: uses Assembly.TryGetRawMetadata() to read PE bytes directly from assemblies already loaded in the WASM process, zero HTTP requests.

Dead code removed: getCompilationDlls, putInCacheStorage, clearCache, convertBase64StringToBytes,
convertBytesToBase64String, CACHE_NAME, etc all gone.

[sonarqubecloud]

Quality Gate passed

Issues
6 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[versile2]

Looks good, verified on Chrome, Edge, Firefox, both incognito and regular. Only odd thing is what we discussed very first time I ran the project it just "stood" there for multiple minutes after I hit Play. Might have been some initial download I needed?

Thank you!