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

go.mod

@@ -10,6 +10,7 @@ require (
 	github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/trace v1.24.0
 	github.com/Masterminds/squirrel v1.5.4
 	github.com/ajstarks/svgo v0.0.0-20211024235047-1546f124cd8b
+	github.com/alecthomas/participle/v2 v2.1.1
 	github.com/alicebob/miniredis/v2 v2.33.0
 	github.com/benbjohnson/clock v1.3.5
 	github.com/boombuler/barcode v1.0.2