*: add krew metadata and CI workflows

Author: joelanford

.github/workflows/ci.yml

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+
+name: ci
+on:
+  push:
+  pull_request:
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Setup Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.14
+
+    - name: Run GoReleaser
+      uses: goreleaser/goreleaser-action@v2
+      with:
+        version: latest
+        args: release --snapshot --rm-dist

.github/workflows/release.yml

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+name: release
+on:
+  push:
+    tags:
+    - 'v*.*.*'
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Setup Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.14
+
+    - name: GoReleaser
+      uses: goreleaser/goreleaser-action@v2
+      with:
+        version: latest
+        args: release --rm-dist
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+#    - name: Update new version in krew-index
+#      uses: rajatjindal/[email protected]

.goreleaser.yml

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+before:
+  hooks:
+  - go mod download
+builds:
+- id: kubectl-operator
+  main: ./
+  binary: kubectl-operator
+  env:
+  - CGO_ENABLED=0
+  goos:
+  - linux
+  - darwin
+  - windows
+  goarch:
+  - amd64
+  - arm64
+  - ppc64le
+  - s390x
+  ignore:
+  - goos: darwin
+    goarch: arm64
+  - goos: darwin
+    goarch: ppc64le
+  - goos: darwin
+    goarch: s390x
+  - goos: windows
+    goarch: arm64
+  - goos: windows
+    goarch: ppc64le
+  - goos: windows
+    goarch: s390x
+
+archives:
+- builds:
+  - kubectl-operator
+  name_template: "{{ .ProjectName }}_{{ .Tag }}_{{ .Os }}_{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}"
+  wrap_in_directory: false
+  format: tar.gz
+  files:
+  - LICENSE

.krew.yaml

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+apiVersion: krew.googlecontainertools.github.com/v1alpha2
+kind: Plugin
+metadata:
+  name: operator
+spec:
+  version: {{ .TagName }}
+  homepage: https://github.com/joelanford/kubectl-operator
+  shortDescription: Manage Kubernetes Operators with Operator Lifecycle Manager
+  description: |
+    This plugin is a package manager for Operators in your cluster. It
+    simplifies adding and removing Operator catalogs, and it has familiar
+    commands for installing, uninstalling, and listing available and
+    installed Operators.
+  caveats: |
+    * This plugin requires Operator Lifecycle Manager to be installed in your
+      cluster. See the installation instructions at https://olm.operatorframework.io/docs/getting-started/
+  platforms:
+  - selector:
+      matchLabels:
+        os: darwin
+        arch: amd64
+    {{addURIAndSha "https://github.com/joelanford/kubectl-operator/releases/download/{{ .TagName }}/kubectl-operator_{{ .TagName }}_darwin_amd64.tar.gz" .TagName }}
+    bin: kubectl-operator
+  - selector:
+      matchLabels:
+        os: linux
+        arch: amd64
+    {{addURIAndSha "https://github.com/joelanford/kubectl-operator/releases/download/{{ .TagName }}/kubectl-operator_{{ .TagName }}_linux_amd64.tar.gz" .TagName }}
+    bin: kubectl-operator
+  - selector:
+      matchLabels:
+        os: linux
+        arch: ppc64le
+    {{addURIAndSha "https://github.com/joelanford/kubectl-operator/releases/download/{{ .TagName }}/kubectl-operator_{{ .TagName }}_linux_ppc64le.tar.gz" .TagName }}
+    bin: kubectl-operator
+  - selector:
+      matchLabels:
+        os: linux
+        arch: s390x
+    {{addURIAndSha "https://github.com/joelanford/kubectl-operator/releases/download/{{ .TagName }}/kubectl-operator_{{ .TagName }}_linux_s390x.tar.gz" .TagName }}
+    bin: kubectl-operator
+  - selector:
+      matchLabels:
+        os: windows
+        arch: amd64
+    {{addURIAndSha "https://github.com/joelanford/kubectl-operator/releases/download/{{ .TagName }}/kubectl-operator_{{ .TagName }}_windows_amd64.tar.gz" .TagName }}
+    bin: kubectl-operator.exe
+