feat: integrate agentAPI with resources monitoring logic (#16438)

As part of the new resources monitoring logic - more specifically for
OOM & OOD Notifications , we need to update the AgentAPI , and the
agents logic.

This PR aims to do it, and more specifically :  
We are updating the AgentAPI & TailnetAPI to version 24 to add two new
methods in the AgentAPI :
- One method to fetch the resources monitoring configuration
- One method to push the datapoints for the resources monitoring.

Also, this PR adds a new logic on the agent side, with a routine running
and ticking - fetching the resources usage each time , but also storing
it in a FIFO like queue.

Finally, this PR fixes a problem we had with RBAC logic on the resources
monitoring model, applying the same logic than we have for similar
entities.

tailnet/proto/tailnet_drpc_old.go

@@ -34,3 +34,9 @@ type DRPCTailnetClient23 interface {
 	RefreshResumeToken(ctx context.Context, in *RefreshResumeTokenRequest) (*RefreshResumeTokenResponse, error)
 	WorkspaceUpdates(ctx context.Context, in *WorkspaceUpdatesRequest) (DRPCTailnet_WorkspaceUpdatesClient, error)
 }
+
+// DRPCTailnetClient24 is the Tailnet API at v2.4. It is functionally identical to 2.3, because the
+// change was to the Agent API (ResourcesMonitoring methods).
+type DRPCTailnetClient24 interface {
+	DRPCTailnetClient23
+}

tailnet/proto/version.go

@@ -38,9 +38,14 @@ import (
 //     shipped in Coder v2.16.0, but we forgot to increment the API version. If
 //     you dial for API v2.2, you MAY be connected to a server that supports
 //     ScriptCompleted, but be prepared to process "unsupported" errors.)
+//
+// API v2.4:
+//   - Shipped in Coder v2.{{placeholder}} // TODO Vincent: Replace with the correct version
+//   - Added support for GetResourcesMonitoringConfiguration and
+//     PushResourcesMonitoringUsage RPCs on the Agent API.
 const (
 	CurrentMajor = 2
-	CurrentMinor = 3
+	CurrentMinor = 4
 )
 
 var CurrentVersion = apiversion.New(CurrentMajor, CurrentMinor)