[v15] add Access Graph usage events for AWS, Secret scanner and gitlab (

#46529)

* add Access Graph usage events for Secret scanner and gitlab (#46430)

This PR adds the Access Graph usage events to track the activity on access graph Gitlab and Secrets Scanner integrations.

Signed-off-by: Tiago Silva <tiago.silva@goteleport.com>

* add Access Graph usage events for AWS (#46468)

This PR adds the Access Graph usage events to track the activity on access graph AWS integration.

Signed-off-by: Tiago Silva <tiago.silva@goteleport.com>

---------

Signed-off-by: Tiago Silva <tiago.silva@goteleport.com>

api/proto/teleport/usageevents/v1/usageevents.proto

@@ -667,6 +667,33 @@ message TAGExecuteQueryEvent {
   bool is_success = 3;
 }
 
+// AccessGraphAWSScanEvent is emitted when the Access Graph
+// AWS scan is enabled.
+message AccessGraphAWSScanEvent {
+  // total_ec2_instances is the total amount of EC2 instances found in the AWS scan.
+  uint64 total_ec2_instances = 1;
+  // total_users is the total amount of users found in the AWS scan.
+  uint64 total_users = 2;
+  // total_groups is the total amount of groups found in the AWS scan.
+  uint64 total_groups = 3;
+  // total_roles is the total amount of roles found in the AWS scan.
+  uint64 total_roles = 4;
+  // total_policies is the total amount of policies found in the AWS scan.
+  uint64 total_policies = 5;
+  // total_eks_clusters is the total amount of EKS clusters found in the AWS scan.
+  uint64 total_eks_clusters = 6;
+  // total_rds_instances is the total amount of RDS instances found in the AWS scan.
+  uint64 total_rds_instances = 7;
+  // total_s3_buckets is the total amount of S3 buckets found in the AWS scan.
+  uint64 total_s3_buckets = 8;
+  // total_saml_providers is the total amount of SAML providers found in the AWS scan.
+  uint64 total_saml_providers = 9;
+  // total_oidc_providers is the total amount of OIDC providers found in the AWS scan.
+  uint64 total_oidc_providers = 10;
+  // total_accounts is the total amount of accounts synchronized in the AWS scan.
+  uint64 total_accounts = 11;
+}
+
 // SecurityReportGetResultEvent is emitted when the user requests a security report.
 message SecurityReportGetResultEvent {
   // name is the name of the security report.
@@ -747,6 +774,7 @@ message UsageEventOneOf {
     UIDiscoverCreateDiscoveryConfigEvent ui_discover_create_discovery_config = 55;
     UIDiscoverKubeEKSEnrollEvent ui_discover_kube_eks_enroll_event = 56;
     UIDiscoverCreateAppServerEvent ui_discover_create_app_server_event = 57;
+    AccessGraphAWSScanEvent access_graph_aws_scan_event = 58;
   }
   reserved 2; //UIOnboardGetStartedClickEvent
   reserved "ui_onboard_get_started_click";