Create draft release automation

[shamsher31]

What this PR does / why we need it:
Resumption of #183

Which issue(s) this PR fixes:
Fixes #181

Additional information
Uses https://github.com/softprops/action-gh-release
Note: This needs to be tested carefully as it affects release artifacts and release notes.

Special notes for your reviewer
Tested with act https://github.com/nektos/act

$ act -j build
[Draft Release/build] 🚀  Start image=catthehacker/ubuntu:act-latest
[Draft Release/build]   🐳  docker run image=catthehacker/ubuntu:act-latest platform= entrypoint=["/usr/bin/tail" "-f" "/dev/null"] cmd=[]
[Draft Release/build]   🐳  docker exec cmd=[mkdir -m 0777 -p /var/run/act] user=root
[Draft Release/build]   🐳  docker cp src=/Users/shamshera/Projects/cluster-api-provider-bringyourownhost/. dst=/Users/shamshera/Projects/cluster-api-provider-bringyourownhost
[Draft Release/build]   🐳  docker exec cmd=[mkdir -p /Users/shamshera/Projects/cluster-api-provider-bringyourownhost] user=
[Draft Release/build] ⭐  Run Checkout
[Draft Release/build]   ✅  Success - Checkout
[Draft Release/build] ⭐  Run Set up Go
INFO[0001]   ☁  git clone 'https://github.com/actions/setup-go' # ref=v2 
[Draft Release/build]   🐳  docker cp src=/Users/shamshera/.cache/act/actions-setup-go@v2/ dst=/var/run/act/actions/actions-setup-go@v2/
[Draft Release/build]   🐳  docker exec cmd=[mkdir -p /var/run/act/actions/actions-setup-go@v2/] user=
[Draft Release/build]   🐳  docker exec cmd=[node /var/run/act/actions/actions-setup-go@v2/dist/index.js] user=
| Setup go stable version spec 1.16
| Successfully setup go version 1.16
[Draft Release/build]   ❓  ##[add-matcher]/run/act/actions/actions-setup-go@v2/matchers.json
| go version go1.16.10 linux/amd64

| GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build3249229116=/tmp/go-build -gno-record-gcc-switches"
| 
[Draft Release/build]   ❓  ::endgroup::
[Draft Release/build]   ✅  Success - Set up Go
[Draft Release/build] ⭐  Run Build Release Artifacts
[Draft Release/build]   🐳  docker exec cmd=[bash --noprofile --norc -e -o pipefail /Users/shamshera/Projects/cluster-api-provider-bringyourownhost/workflow/2] user=
| rm -rf _dist
| mkdir -p _dist
| go: creating new go.mod: module tmp

/Users/shamshera/Projects/cluster-api-provider-bringyourownhost/bin/kustomize build /Users/shamshera/Projects/cluster-api-provider-bringyourownhost/test/e2e/data/infrastructure-provider-byoh/v1beta1 --load_restrictor none > /Users/shamshera/Projects/cluster-api-provider-bringyourownhost/test/e2e/data/infrastructure-provider-byoh/v1beta1/cluster-template.yaml
| cp /Users/shamshera/Projects/cluster-api-provider-bringyourownhost/test/e2e/data/infrastructure-provider-byoh/v1beta1/cluster-template.yaml _dist/cluster-template.yaml
| sed -i -e 1,20d _dist/cluster-template.yaml
| cd config/manager && /Users/shamshera/Projects/cluster-api-provider-bringyourownhost/bin/kustomize edit set image gcr.io/k8s-staging-cluster-api/cluster-api-byoh-controller=projects.registry.vmware.com/cluster_api_provider_bringyourownhost/cluster-api-byoh-controller:refs/heads/draft-release
| /Users/shamshera/Projects/cluster-api-provider-bringyourownhost/bin/kustomize build config/default > _dist/infrastructure-components.yaml
| cp metadata.yaml _dist/metadata.yaml

[anusha94]

Super useful PR. Thank you!