feat: list users scim v2 endpoint (#9187)

# Which Problems Are Solved
- Adds support for the list users SCIM v2 endpoint

# How the Problems Are Solved
- Adds support for the list users SCIM v2 endpoints under `GET
/scim/v2/{orgID}/Users` and `POST /scim/v2/{orgID}/Users/.search`

# Additional Changes
- adds a new function `SearchUserMetadataForUsers` to the query layer to
query a metadata keyset for given user ids
- adds a new function `NewUserMetadataExistsQuery` to the query layer to
query a given metadata key value pair exists
- adds a new function `CountUsers` to the query layer to count users
without reading any rows
- handle `ErrorAlreadyExists` as scim errors `uniqueness`
- adds `NumberLessOrEqual` and `NumberGreaterOrEqual` query comparison
methods
- adds `BytesQuery` with `BytesEquals` and `BytesNotEquals` query
comparison methods

# Additional Context
Part of #8140
Supported fields for scim filters:
* `meta.created`
* `meta.lastModified`
* `id`
* `username`
* `name.familyName`
* `name.givenName`
* `emails` and `emails.value`
* `active` only eq and ne
* `externalId` only eq and ne

internal/query/user_metadata_test.go

@@ -30,6 +30,7 @@ var (
 	}
 	userMetadataListQuery = `SELECT projections.user_metadata5.creation_date,` +
 		` projections.user_metadata5.change_date,` +
+		` projections.user_metadata5.user_id,` +
 		` projections.user_metadata5.resource_owner,` +
 		` projections.user_metadata5.sequence,` +
 		` projections.user_metadata5.key,` +
@@ -39,6 +40,7 @@ var (
 	userMetadataListCols = []string{
 		"creation_date",
 		"change_date",
+		"user_id",
 		"resource_owner",
 		"sequence",
 		"key",
@@ -148,6 +150,7 @@ func Test_UserMetadataPrepares(t *testing.T) {
 						{
 							testNow,
 							testNow,
+							"1",
 							"resource_owner",
 							uint64(20211108),
 							"key",
@@ -164,6 +167,7 @@ func Test_UserMetadataPrepares(t *testing.T) {
 					{
 						CreationDate:  testNow,
 						ChangeDate:    testNow,
+						UserID:        "1",
 						ResourceOwner: "resource_owner",
 						Sequence:      20211108,
 						Key:           "key",
@@ -183,6 +187,7 @@ func Test_UserMetadataPrepares(t *testing.T) {
 						{
 							testNow,
 							testNow,
+							"1",
 							"resource_owner",
 							uint64(20211108),
 							"key",
@@ -191,6 +196,7 @@ func Test_UserMetadataPrepares(t *testing.T) {
 						{
 							testNow,
 							testNow,
+							"2",
 							"resource_owner",
 							uint64(20211108),
 							"key2",
@@ -207,6 +213,7 @@ func Test_UserMetadataPrepares(t *testing.T) {
 					{
 						CreationDate:  testNow,
 						ChangeDate:    testNow,
+						UserID:        "1",
 						ResourceOwner: "resource_owner",
 						Sequence:      20211108,
 						Key:           "key",
@@ -215,6 +222,7 @@ func Test_UserMetadataPrepares(t *testing.T) {
 					{
 						CreationDate:  testNow,
 						ChangeDate:    testNow,
+						UserID:        "2",
 						ResourceOwner: "resource_owner",
 						Sequence:      20211108,
 						Key:           "key2",