Add Telemetry collector structure with some collected resources

[bjee19]

Proposed changes

Problem: We want to create a starting design to collect telemetry data.

Solution: Implemented design to collect multiple types of telemetry data: Cluster Node Count, Count of NGF Resources (Graph), Project and Version.

Testing: Added unit tests. Did some end to end testing where I deployed NGF alongside some resources and saw the correct data being logged.

{"level":"debug","ts":"2024-02-05T18:32:46Z","logger":"telemetryJob","msg":"Gathering telemetry data"}
{"level":"debug","ts":"2024-02-05T18:32:46Z","logger":"telemetryJob","msg":"Exporting telemetry data"}
{"level":"debug","ts":"2024-02-05T18:32:46Z","logger":"telemetryExporter","msg":"Exporting telemetry","data":{"ProjectMetadata":{"Name":"NGF","Version":"edge"},"NodeCount":1,"NGFResourceCounts":{"Gateways":1,"GatewayClasses":1,"HTTPRoutes":3,"Secrets":1,"Services":2,"Endpoints":2}}}
{"level":"debug","ts":"2024-02-05T18:34:47Z","logger":"telemetryJob","msg":"Gathering telemetry data"}
{"level":"debug","ts":"2024-02-05T18:34:47Z","logger":"telemetryJob","msg":"Exporting telemetry data"}
{"level":"debug","ts":"2024-02-05T18:34:47Z","logger":"telemetryExporter","msg":"Exporting telemetry","data":{"ProjectMetadata":{"Name":"NGF","Version":"edge"},"NodeCount":1,"NGFResourceCounts":{"Gateways":1,"GatewayClasses":1,"HTTPRoutes":3,"Secrets":1,"Services":2,"Endpoints":2}}}
{"level":"debug","ts":"2024-02-05T18:36:47Z","logger":"telemetryJob","msg":"Gathering telemetry data"}
{"level":"debug","ts":"2024-02-05T18:36:47Z","logger":"telemetryJob","msg":"Exporting telemetry data"}
{"level":"debug","ts":"2024-02-05T18:36:47Z","logger":"telemetryExporter","msg":"Exporting telemetry","data":{"ProjectMetadata":{"Name":"NGF","Version":"edge"},"NodeCount":1,"NGFResourceCounts":{"Gateways":1,"GatewayClasses":1,"HTTPRoutes":3,"Secrets":1,"Services":2,"Endpoints":2}}}
{"level":"debug","ts":"2024-02-05T18:38:48Z","logger":"telemetryJob","msg":"Gathering telemetry data"}
{"level":"debug","ts":"2024-02-05T18:38:48Z","logger":"telemetryJob","msg":"Exporting telemetry data"}
{"level":"debug","ts":"2024-02-05T18:38:48Z","logger":"telemetryExporter","msg":"Exporting telemetry","data":{"ProjectMetadata":{"Name":"NGF","Version":"edge"},"NodeCount":1,"NGFResourceCounts":{"Gateways":1,"GatewayClasses":1,"HTTPRoutes":3,"Secrets":1,"Services":2,"Endpoints":2}}}
{"level":"debug","ts":"2024-02-05T18:40:48Z","logger":"telemetryJob","msg":"Gathering telemetry data"}
{"level":"debug","ts":"2024-02-05T18:40:48Z","logger":"telemetryJob","msg":"Exporting telemetry data"}
{"level":"debug","ts":"2024-02-05T18:40:48Z","logger":"telemetryExporter","msg":"Exporting telemetry","data":{"ProjectMetadata":{"Name":"NGF","Version":"edge"},"NodeCount":1,"NGFResourceCounts":{"Gateways":1,"GatewayClasses":1,"HTTPRoutes":3,"Secrets":1,"Services":2,"Endpoints":2}}}

(I tested with the telemetry report period changed to 2 minutes)

Closes #1306 #1312 #1309

Checklist

Before creating a PR, run through this checklist and mark each as complete.

• I have read the CONTRIBUTING doc
• I have added tests that prove my fix is effective or that my feature works
• I have checked that all unit tests pass after adding my changes
• I have updated necessary documentation
• [] I have rebased my branch onto main
• I will ensure my PR is targeting the main branch and pulling from my branch from my own fork

[bjee19]

If there is anything glaringly wrong and/or things I've added that aren't on the right track, I'm all open for the feedback!

[pleshakov]

please see my comments.

I'd also include in this PoC some static data like this -- #1309 -- so that we can see how the design will incorporate temetry data that stays the same during the lifetime of the NGF process.

[kate-osborn]

The design looks good to me! Just a couple nits and questions.

[pleshakov]

please see my comments, suggestions and requests.
Note: I haven't reviewed collector_test.go -- need a bit more time for that.

[pleshakov]

@bjee19
I left a few requests/suggestions
Could you prioritize rebasing and resolving conflicts?
The Job code will be changed so there will be a need for a another review.