Adds Go SDK client Counter functions

[igooch]

What type of PR is this?

/kind feature

What this PR does / Why we need it:

Implements the Go SDK client Counter functions

Which issue(s) this PR fixes:

Working on #2716

Special notes for your reviewer:

[agones-bot]

Build Succeeded 👏

Build Id: 269b9eb4-6493-4923-92ac-d835165a375b

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.35.0-dev-cf44593-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.35.0-dev-cf44593-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.35.0-dev-cf44593-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.35.0-dev-cf44593-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.35.0-dev-cf44593-amd64
• Linux C++ SDK (build): agonessdk-1.35.0-dev-cf44593-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.35.0-dev-cf44593-amd64.zip

A preview of the website (the last 30 builds are retained):

• https://cf44593-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3372/head:pr_3372 && git checkout pr_3372
• helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.35.0-dev-cf44593-amd64

[markmandel]

This all looks great, just a note on whether we need that method, and if possible, we don't need to update the date on all the CRD apis?

[agones-bot]

Build Failed 😱

Build Id: b2f9f595-3b5b-478e-aeac-11b5c2de25ce

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[agones-bot]

Build Succeeded 👏

Build Id: 0c04084e-e825-4285-bd20-b50b03a110b3

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.35.0-dev-c834a24-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.35.0-dev-c834a24-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.35.0-dev-c834a24-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.35.0-dev-c834a24-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.35.0-dev-c834a24-amd64
• Linux C++ SDK (build): agonessdk-1.35.0-dev-c834a24-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.35.0-dev-c834a24-amd64.zip

A preview of the website (the last 30 builds are retained):

• https://c834a24-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3372/head:pr_3372 && git checkout pr_3372
• helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.35.0-dev-c834a24-amd64

[google-oss-prow]

New changes are detected. LGTM label has been removed.

[google-oss-prow]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: igooch, markmandel

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[agones-bot]

Build Succeeded 👏

Build Id: af231055-76fd-4893-b92c-68b7127e2e5e

The following development artifacts have been built, and will exist for the next 30 days:

• image: us-docker.pkg.dev/agones-images/ci/agones-controller:1.35.0-dev-a1b82a7-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-extensions:1.35.0-dev-a1b82a7-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-sdk:1.35.0-dev-a1b82a7-linux-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-ping:1.35.0-dev-a1b82a7-amd64
• image: us-docker.pkg.dev/agones-images/ci/agones-allocator:1.35.0-dev-a1b82a7-amd64
• Linux C++ SDK (build): agonessdk-1.35.0-dev-a1b82a7-amd64-linux-arch_64.tar.gz
• SDK Server: agonessdk-server-1.35.0-dev-a1b82a7-amd64.zip

A preview of the website (the last 30 builds are retained):

• https://a1b82a7-dot-preview-dot-agones-images.appspot.com/

To install this version:

• git fetch https://github.com/googleforgames/agones.git pull/3372/head:pr_3372 && git checkout pr_3372
• helm install agones ./install/helm/agones --namespace agones-system --set agones.image.registry=us-docker.pkg.dev/agones-images/ci --set agones.image.tag=1.35.0-dev-a1b82a7-amd64