LHK-590 Added modern GraphQL Relay sample project with React

[okhorsunenko-lula]

No description provided.

[xperiandri]

@andriilula please, review too

[xperiandri]

@okhorsunenko-lula, @andriilula do we need relay-starter-kit having relay-modern-starter-kit?

[xperiandri]

@okhorsunenko-lula let's format fields input parameter in the same way across the solution FSharp.Data.GraphQL.Relay/Connections.fs
either

fields = [
    Define.Field("hasNextPage", Boolean, "When paginating forwards, are there more items?", fun _ pageInfo -> pageInfo.HasNextPage)
    Define.Field("hasPreviousPage", Boolean, "When paginating backwards, are there more items?", fun _ pageInfo -> pageInfo.HasPreviousPage)
    Define.Field("startCursor", Nullable String, "When paginating backwards, the cursor to continue.", fun _ pageInfo -> pageInfo.StartCursor)
    Define.Field("endCursor", Nullable String, "When paginating forwards, the cursor to continue.", fun _ pageInfo -> pageInfo.EndCursor)
])

or

fields =
    [ Define.Field("hasNextPage", Boolean, "When paginating forwards, are there more items?", fun _ pageInfo -> pageInfo.HasNextPage)
      Define.Field("hasPreviousPage", Boolean, "When paginating backwards, are there more items?", fun _ pageInfo -> pageInfo.HasPreviousPage)
      Define.Field("startCursor", Nullable String, "When paginating backwards, the cursor to continue.", fun _ pageInfo -> pageInfo.StartCursor)
      Define.Field("endCursor", Nullable String, "When paginating forwards, the cursor to continue.", fun _ pageInfo -> pageInfo.EndCursor) ])

What Fantomas will do?

[kevin-lula]

Looks good to me

[xperiandri]

@okhorsunenko-lula so will you replace the old Relay folder content with content from the modern Relay?

[xperiandri]

@okhorsunenko-lula, looks good!
Fixing a few comments and a workflow update left

[xperiandri]

@okhorsunenko-lula test Relay again. I made Edges not nullable. I don't understand why the original author made them nullable. Have you seen anything about that in spec?

[xperiandri]

@okhorsunenko-lula we need to test the sample manually again. Then we can merge

[okhorsunenko-lula]

@xperiandri tested, looks good and works, attaching the screenshot
Can you please merge it?