API proposal for hot reload webassembly APIs

[javiercn]

+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.Delta() -> void
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.ILDelta.get -> byte[]!
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.ILDelta.init -> void
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.MetadataDelta.get -> byte[]!
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.MetadataDelta.init -> void
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.ModuleId.get -> string!
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.ModuleId.init -> void
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.PdbDelta.get -> byte[]!
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.PdbDelta.init -> void
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.UpdatedTypes.get -> int[]!
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta.UpdatedTypes.init -> void
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.LogEntry
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.LogEntry.LogEntry() -> void
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.LogEntry.Message.get -> string!
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.LogEntry.Message.init -> void
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.LogEntry.Severity.get -> int
+Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.LogEntry.Severity.init -> void
+static Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.ApplyHotReloadDeltas(Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.Delta[]! deltas, int loggingLevel) -> Microsoft.AspNetCore.Components.WebAssembly.HotReload.WebAssemblyHotReload.LogEntry[]!

[dotnet-policy-service]

Thank you for submitting this for API review. This will be reviewed by @dotnet/aspnet-api-review at the next meeting of the ASP.NET Core API Review group. Please ensure you take a look at the API review process documentation and ensure that:

• The PR contains changes to the reference-assembly that describe the API change. Or, you have included a snippet of reference-assembly-style code that illustrates the API change.
• The PR describes the impact to users, both positive (useful new APIs) and negative (breaking changes).
• Someone is assigned to "champion" this change in the meeting, and they understand the impact and design of the change.

[javiercn]

@maraf do you know if these APIs are going to go away before RTM?