Reduce memory footprint and improve performance of expression-based ORM usage

[bessgeor]

Repro steps

1. clone https://github.com/bessgeor/benchmark-fsharp-csharp-query-building
2. run dotnet tools restore
3. run cd ./BuildQuery.Benchmark
4. run dotnet publish -c Release -m
5. run dotnet ./bin/Release/netcoreapp3.1/publish/BuildQuery.Benchmark.dll

Expected behavior

F#'s performance is slighly lower than C#'s because of Quotation->Expression conversion

Actual behavior

F# is 6x times slower (~0.65ms more per call) and allocates 10x times more (~453 KiB more per call)

Known workarounds

Query compilation may move this costs to startup time, but it's blocked by #2758 and may not be used on every query.

Related information

Provide any related information (optional):

• OS Windows 10.0.19041.630
• .NET Runtime .NET Core 3.1.5 (CoreCLR 4.700.20.26901, CoreFX 4.700.20.27001)
• Editor Rider 16.2.4