Add support for conversations & analytics APIs, allow specification of dirty values behaviors and export option

[phiHero]

Change Summary

• [Breaking Change] Single document index methods now have another parameter for specifying dirty values behavior.

client.Collection("companies").Documents().Create(context.Background(), document, &api.DocumentIndexParameters{DirtyValues: pointer.Any(api.CoerceOrDrop)})
client.Collection("companies").Documents().Upsert(context.Background(), document, &api.DocumentIndexParameters{DirtyValues: pointer.Any(api.CoerceOrDrop)})
client.Collection("companies").Document("123").Update(context.Background(), document, &api.DocumentIndexParameters{DirtyValues: pointer.Any(api.CoerceOrDrop)})

• [Breaking Change] We can now control the result of the export through an additional parameter *api.ExportDocumentsParams.

client.Collection("companies").Documents().Export(context.Background(), &api.ExportDocumentsParams{
		FilterBy:      pointer.String("num_employees>:1000"),
		IncludeFields: pointer.String("name"),
		ExcludeFields: pointer.String("year"),
	})

• [Breaking Change] The import Action type is now an enum instead of *string.

&api.ImportDocumentsParams{
	//	Action:    pointer.String("create"),
	Action:    pointer.Any(api.Create),
}

• [Breaking Change] Override rule Query and Match field are now optional.

api.SearchOverrideRule{
    // before
    // Query: "apple",
    // Match: "exact",
    Query: pointer.String("apple"),
    Match: pointer.Any(api.Exact),
}

Features:

• Added Analytics and Conversation APIs, update override and search parameters.
• Added a generic pointer.Any() helper function which can turn any type into a pointer. This is especially useful when the param is of enum type.

// before
var upsertAction api.IndexDocumentParamsAction = "upsert"
&api.IndexDocumentParams{
		Action:      &upsertAction,
}
// after
&api.IndexDocumentParams{
		Action:      pointer.Any(api.Upsert),
}

PR Checklist

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