feat(iam): add user tags option (#2770)

* feat: add user tags option

* fix: read user tags

* feat: data source user tags

* test(iam_user): edit tags

* test(iam_user): record basic user test

* sort imports

---------

Co-authored-by: Jules Casteran <[email protected]>

Author: Monitob

docs/data-sources/iam_user.md

@@ -36,3 +36,5 @@ data "scaleway_iam_user" "find_by_email" {
 In addition to all above arguments, the following attributes are exported:
 
 - `id` - The ID of the IAM user.
+- `tags` - The tags associated with the user.
+

docs/resources/iam_user.md

@@ -38,6 +38,8 @@ resource scaleway_iam_user user {
 
 - `email` - (Required) The email of the IAM user.
 
+- `tags` - (Optional) The tags associated with the user.
+
 - `organization_id` - (Defaults to [provider](../index.md#organization_d) `organization_id`) The ID of the organization the user is associated with.
 
 ## Attributes Reference