Migrate from CircleCI to Github Actions (#173)

CI/CD reusable workflows in Github Actions for Plugin software lifecycle

Ticket: https://mattermost.atlassian.net/browse/CLD-4816

.circleci/config.yml

@@ -1,12 +0,0 @@
-version: 2.1
-
-orbs:
-  plugin-ci: mattermost/plugin-ci@0.1.12
-
-workflows:
-  version: 2
-  ci:
-    jobs:
-      - plugin-ci/lint
-      - plugin-ci/test
-      - plugin-ci/build

.github/workflows/cd.yml

@@ -0,0 +1,18 @@
+name: cd
+on:
+  workflow_run:
+    workflows: ["ci"]
+    branches-ignore: ["*"]
+    types:
+      - completed
+  push:
+    tags:
+      - "^v.*"
+
+permissions:
+  contents: read
+
+jobs:
+  plugin-cd:
+    uses: mattermost/actions-workflows/.github/workflows/plugin-cd.yml@main
+    secrets: inherit

.github/workflows/ci.yml

@@ -0,0 +1,18 @@
+name: ci
+on:
+  schedule:
+    - cron: "0 0 * * *"
+  push:
+    branches:
+      - master
+    tags:
+      - "^v.*"
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  plugin-ci:
+    uses: mattermost/actions-workflows/.github/workflows/plugin-ci.yml@main
+    secrets: inherit

.nvmrc

@@ -0,0 +1 @@
+14.21.1