Adds support for serialization of csv values for Go enums

[rkodev]

Resolves microsoftgraph/msgraph-sdk-go#517

Adds support for serialization of csv values for Go enums by adding a value mask that can support multiple Go values

func (i ConditionalAccessGuestOrExternalUserTypes) String() string {
	var data []string
	for p := ConditionalAccessGuestOrExternalUserTypes(1); p <= UNKNOWNFUTUREVALUE_CONDITIONALACCESSGUESTOREXTERNALUSERTYPES; p <<= 1 {
		if i&p == p {
			data = append(data, []string{"none", "internalGuest", "b2bCollaborationGuest", "b2bCollaborationMember", "b2bDirectConnectUser", "otherExternalUser", "serviceProvider", "unknownFutureValue"}[p])
		}
	}
	return strings.Join(data, ",")
}
func ParseConditionalAccessGuestOrExternalUserTypes(v string) (any, error) {
	// detect a command in the string and return enum as mask
	var result ConditionalAccessGuestOrExternalUserTypes
	values := strings.Split(v, ",")
	for _, str := range values {
		switch str {
		case "none":
			result |= NONE_CONDITIONALACCESSGUESTOREXTERNALUSERTYPES
		case "internalGuest":
			result |= INTERNALGUEST_CONDITIONALACCESSGUESTOREXTERNALUSERTYPES
		case "b2bCollaborationGuest":
			result |= B2BCOLLABORATIONGUEST_CONDITIONALACCESSGUESTOREXTERNALUSERTYPES
		case "b2bCollaborationMember":
			result |= B2BCOLLABORATIONMEMBER_CONDITIONALACCESSGUESTOREXTERNALUSERTYPES
		case "b2bDirectConnectUser":
			result |= B2BDIRECTCONNECTUSER_CONDITIONALACCESSGUESTOREXTERNALUSERTYPES
		case "otherExternalUser":
			result |= OTHEREXTERNALUSER_CONDITIONALACCESSGUESTOREXTERNALUSERTYPES
		case "serviceProvider":
			result |= SERVICEPROVIDER_CONDITIONALACCESSGUESTOREXTERNALUSERTYPES
		case "unknownFutureValue":
			result |= UNKNOWNFUTUREVALUE_CONDITIONALACCESSGUESTOREXTERNALUSERTYPES
		default:
			return 0, errors.New("Unknown ConditionalAccessGuestOrExternalUserTypes value: " + v)
		}
	}
	return &result, nil
}

[baywet]

@rkodev multiple integration tests are failing, can you have a look please?

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
1 Code Smell

100.0% Coverage
0.0% Duplication

[andrueastman]

@baywet I'm okay to have this merged as it fits into the general bigger picture of what we'd want to do, and I've documented the conversations/findings at #3237.
@rkodev You can probably assign the related Go SDK issues to me and then I'll close them once the issue is closed (hopefully before the next generation cycle 😅 ).

[baywet]

I'm perfectly fine with merging this one as is and have the work on the flags being implemented later. I know this won't solve the customer issue that's linked right now, but we're making progress towards it. @rkodev maybe unlink the "fixes" before you merge the PR?