[API Proposal]: TagProvider but as an interface

[alrz]

Background and motivation

Right now, TagProvider (and LogProperties) are bound to the partial log method for the generator, but the type and the logger are not always available next to each other. Using an interface you can have deconstruction behavior inside some other lib as well.

API Proposal

interface ITagProvider<TSelf> where TSelf : ITagProvider {
    public abstract static void RecordTags(ITagCollector collector, TSelf value);
}

API Usage

[GenerateTagProvider]
partial class SomeObj;

[LoggerMessage(...)]
private static partial void SomeLog<TSelf>(
    this ILogger logger, 
    [LogProperties] ITagProvider<TSelf> obj) where TSelf: ITagProvider<TSelf>;

Alternative Designs

Using an interceptor like dotnet/runtime#102633 could perhaps help here, but that in and by itself won't cover the generic case without some sort of interfacing.

Risks

No response