add pod datastore to introspect, add logs for pod events

[sushrk]

Issue #, if available:
N/A

Description of changes:

1. Adding handler for pod datastore operations to the introspect API

curl http://localhost:22775/datastore/all
{
	"PodDatastore": {
		"PodList": [
			"default/sgp-cronjob-28573380-9jmwf",
			"default/sgp-cronjob-28573380-jp8qj",
			"default/sgp-cronjob-28573380-crpdd",
			"default/hello-world-sgp-767766588-5fx78",
			"default/sgp-cronjob-28573200-4zdkm",
			"default/sgp-cronjob-28573200-h6wrj",
			"kube-system/kube-proxy-hgtjm",
...

sh-4.2$ curl http://localhost:22775/datastore/node/ip-xxx
{
	"ip-xxx": {
		"Pods": {
			"PodList": [
				"default/sgp-cronjob-28573980-w2v5h",
				"default/sgp-cronjob-28574040-z7hdf",
				"default/sgp-cronjob-28573920-zzrp8",
				"default/sgp-cronjob-28574040-mw8kg",
				"default/sgp-cronjob-28574040-r27fs",
				"default/sgp-cronjob-28574040-wdx54",
				"kube-system/kube-proxy-fwfhb",
				"default/sgp-cronjob-28573980-s2fbn",
				"default/sgp-cronjob-28574040-9klss",
				"default/sgp-cronjob-28574040-9mjdt",
				"default/sgp-cronjob-28573920-fzhhl",
				"default/sgp-cronjob-28573920-htd5k",
				"default/sgp-cronjob-28573980-msfln",
				"default/sgp-cronjob-28573980-rwsxj",
				"default/sgp-cronjob-28574040-qbq5j",
				"default/sgp-cronjob-28574040-smwdw",
				"default/sgp-cronjob-28573920-nplkt",
				"default/sgp-cronjob-28574040-dx9r9",
				"default/sgp-cronjob-28574040-rplhd",
				"default/sgp-cronjob-28573980-ktpcl",
				"default/sgp-cronjob-28573920-dkgfx",
				"default/sgp-cronjob-28573920-gt7cd",
				"default/sgp-cronjob-28574040-l7cqp",
				"default/sgp-cronjob-28573920-4z2dq",
				"default/sgp-cronjob-28573980-2wzpk",
				"default/sgp-cronjob-28574040-khzml",
				"default/sgp-cronjob-28573980-jcz6r",
				"default/sgp-cronjob-28574040-58jvz",
				"default/sgp-cronjob-28574040-dgn9x",
				"kube-system/aws-node-s2996",
				"default/sgp-cronjob-28574040-z78kl",
				"default/sgp-cronjob-28573920-mzxq2",
				"default/sgp-cronjob-28574040-2fld4",
				"default/sgp-cronjob-28574040-4vrhf",
				"default/sgp-cronjob-28574040-9mcqv",
				"default/sgp-cronjob-28574040-jbcdt",
				"default/sgp-cronjob-28574040-sp7rf",
				"default/sgp-cronjob-28574040-crrxd",
				"default/sgp-cronjob-28574040-gfj4v",
				"default/sgp-cronjob-28574040-nrhdg",
				"default/sgp-cronjob-28574040-wbftb",
				"default/sgp-cronjob-28574040-7kjg5",
				"default/sgp-cronjob-28573920-xfcq4",
				"default/sgp-cronjob-28573980-fds7l",
				"default/sgp-cronjob-28574040-2gbt6",
				"default/sgp-cronjob-28574040-6dkxv",
				"default/sgp-cronjob-28574040-hxsf9",
				"default/sgp-cronjob-28574040-npcdh",
				"default/sgp-cronjob-28574040-xc54l"
			]
		},
		"RunningPods": {
			"PodList": [
				"kube-system/kube-proxy-fwfhb",
				"default/sgp-cronjob-28574040-rplhd",
				"kube-system/aws-node-s2996",
				"default/sgp-cronjob-28574040-9mcqv"
			]
		}
	}

2. Added logs to debug the pod events received by the handler

{"level":"info","timestamp":"2024-04-23T19:00:00.291Z","logger":"controllers.Pod Reconciler.custom pod controller","msg":"processing item","objName":"sgp-cronjob-28564980-mvcbh","deltaType":"Updated"}
{"level":"info","timestamp":"2024-04-23T19:00:00.328Z","logger":"controllers.Pod Reconciler.custom pod controller","msg":"processing item","objName":"sgp-cronjob-28564980-cccxf","deltaType":"Added"}
{"level":"info","timestamp":"2024-04-29T11:15:05.384Z","logger":"controllers.Pod Reconciler.custom pod controller","msg":"processing item","objName":"sgp-cronjob-28573020-dbrcc","deltaType":"Deleted"}

{"level":"info","timestamp":"2024-04-29T15:14:16.420Z","logger":"controllers.Pod Reconciler.custom pod controller","msg":"deleting item","objName":"sgp-cronjob-28573200-ffvlk","namespace":"default"}

3. Use GetRunningPodsOnNode in NodeReconcile to be ensure we only track branch ENIs for active pods.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[jayanthvn]

except for the logs comment, rest lgtm

[sushrk]

Added a single path for node, updated the PR details.

[haouc]

lgtm