🚀feat(cyclops-ctrl): adds prometheus metrics to reconciler

[naineel1209]

closes #598

📑 Description

• added required reconciler metrics to the Prometheus monitor
• currently added metrics are

type Monitor struct {
	ModulesDeployed  prometheus.Gauge
	CacheHits        prometheus.Gauge
	CacheMisses      prometheus.Gauge
	CacheKeysAdded   prometheus.Gauge
	CacheCostAdded   prometheus.Gauge
	CacheKeysEvicted prometheus.Gauge
	CacheCostEvicted prometheus.Gauge

	// Reconciler Metrics
	ReconcilerDuration   prometheus.Histogram
	NoOfReconciliations   prometheus.Counter
	FailedReconciliations prometheus.Counter
}

• added methods to update the reconciler metrics
• added increment for no_of_reconciliations for every attempted reconciliation
• added increment for failed_reconciliations for every failed reconciliation
• added deferred function call to observe the amount of time spent in reconciliation

✅ Checks

• [✅] I have tested my code (provide screenshots or screen recordings of a working solution)
• [✅] I have performed a self-review of my code

ℹ Additional context

[naineel1209]

@quest-bot loot #598

[quest-bot]

Quest PR submitted!

@naineel1209, you are attempting to solve the issue and loot this Quest. Will you be successful?

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Questions? Check out the docs.

[petar-cvit]

Left a couple of comments on naming, but looks good

[petar-cvit]

Thanks @naineel1209 🧡

[quest-bot]

🧚 @naineel1209 congratulations for completing Quest #598

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Questions? Check out the docs.