feat: adds initial release automation

[danehans]

• .github/ISSUE_TEMPLATE/new-release.md: Updates the release github template.
• Makefile: Adds targets to support initial release automation.
• hack/release-quickstart.sh: A script to automate quickstart guide changes required for a release.

fixes: #291

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[kfswain]

Mostly just the patch version thing is what I saw, but overall lgtm! Thanks!

[danehans]

TestKubeInferenceModelRequest/success failed due to:

        hermetic_test.go:266: Unexpected response, (-want +got):   (*ext_procv3.ProcessingResponse)(Inverse(protocmp.Transform, protocmp.Message{
              	"@type": s"envoy.service.ext_proc.v3.ProcessingResponse",
              	"dynamic_metadata": protocmp.Message{
              		"@type": s"google.protobuf.Struct",
              		"fields": map[string]protocmp.Message{
              			"x-gateway-destination-endpoint": {
              				"@type":        s"google.protobuf.Value",
            - 				"string_value": string("pod-1:8000"),
            + 				"string_value": string("pod-2:8000"),
              			},
              		},
              	},

This failure is unrelated to the changes in this PR. Retesting to see if this is a flake.

/hold

[danehans]

/retest

[danehans]

@kfswain I had to rerun CI due to #291 (comment). This PR needs to be retagged.

[kfswain]

Ack on both accounts, happy to hold off on the patch version logic until needed. Who knows, maybe we never do 😎😎.
Feel free to unhold when ready.
/hold
/lgtm

[danehans]

/remove-hold