feat: add metrics publisher for NT (#1791)

Publishes metrics to NT using a protobuf under
`photonvision/coprocessors/metrics` using the device host name as the
key.

Refactors metrics to use numbers where possible, instead of strings.

Removes GPU mem display from metrics card when it can't be determined.

Updates UI metrics periodically.

Resolves #1988

Closes #830

---------

Co-authored-by: Matt <matthew.morley.ca@gmail.com>
Co-authored-by: Gold856 <117957790+Gold856@users.noreply.github.com>

photon-client/src/types/SettingTypes.ts

@@ -25,17 +25,17 @@ export interface ObjectDetectionModelProperties {
 }
 
 export interface MetricData {
-  cpuTemp?: string;
-  cpuUtil?: string;
-  cpuMem?: string;
-  gpuMem?: string;
-  ramUtil?: string;
-  gpuMemUtil?: string;
+  cpuTemp?: number;
+  cpuUtil?: number;
   cpuThr?: string;
-  cpuUptime?: string;
-  diskUtilPct?: string;
-  npuUsage?: string;
+  ramMem?: number;
+  ramUtil?: number;
+  gpuMem?: number;
+  gpuMemUtil?: number;
+  diskUtilPct?: number;
+  npuUsage?: number[];
   ipAddress?: string;
+  uptime?: number;
 }
 
 export enum NetworkConnectionType {