chore: Makefile improvements to increase developer velocity

[ellistarn]

Issue #, if available:

Description of changes:

• Added a DEVELOPER_GUIDE
• Use ko for image builds, improving build times from 10 minutes -> 23 seconds (on OSX)
• Introduce a presubmit target, which executes all steps in the dev workflow
• Introduce a toolchain target, which automatically installs all tools required for development (verified in presubmit)
• Includes controller-gen in presubmit, to enforce CRD to be up to date

Local Controller takes lease

make apply

k get lease cp-vpc-resource-controller -n kube-system -oyaml
apiVersion: coordination.k8s.io/v1
kind: Lease
metadata:
  creationTimestamp: "2022-12-23T10:23:14Z"
  name: cp-vpc-resource-controller
  namespace: kube-system
  resourceVersion: "62722223"
  uid: 8817e6d3-019a-4068-b363-aea4dc9a2daa
spec:
  acquireTime: "2023-06-29T18:36:56.000000Z"
  holderIdentity: vpc-resource-local-controller-574d58d89c-dmkp4_86162373-4d94-43a7-97b2-275d56dede83
  leaseDurationSeconds: 30
  leaseTransitions: 32
  renewTime: "2023-06-29T18:37:21.585152Z"

Controller resumes lease

make delete
k get lease cp-vpc-resource-controller -n kube-system -oyaml

apiVersion: coordination.k8s.io/v1
kind: Lease
metadata:
  creationTimestamp: "2022-12-23T10:23:14Z"
  name: cp-vpc-resource-controller
  namespace: kube-system
  resourceVersion: "62721552"
  uid: 8817e6d3-019a-4068-b363-aea4dc9a2daa
spec:
  acquireTime: "2023-06-29T18:33:26.744612Z"
  holderIdentity: ip-10-0-54-3.us-west-2.compute.internal_3159b31f-49d3-42f5-9d6e-36fd56a34566
  leaseDurationSeconds: 30
  leaseTransitions: 32
  renewTime: "2023-06-29T18:35:01.890293Z"```


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[haouc]

lgtm, thanks for the wonderful improvement. It is much faster for dev.