feat!: Push StreamId out to FsCodec

[bartelink]

See also jet/FsCodec#100

• first cut done
• removed Cosmos/Dynamo wacky mapping overrides (strong types make wacky hack code stick out a mile!)
• move Tracing and Category into Equinox (drags in FsCodec and Serilog)
• move Impl from top of Decider.fs to Stream.fs (renamed from Core.fs)
• review if anything should be added to FsCodec (don't want to put any extensions in Equinox/Equinox.Core)
• considered dragging in Cache and Caching, but that drags in AsyncCacheCell too (and System.MemoryCache ref). Thoughts ? Ultimately there are no interesting stores that don't ref it?
• Apply module Stream pattern as per FsCodec throughout samples/integration tests
  cc @nordfjord