feat(ci): CircleCI migration to Github Actions (#2516)

* Deprecated trigger-desktop-nightly repo from gitlab
* Migrated Nightly builds URLs from CircleCI to S3
* Full CI/CD is handled by Github Actions

---------

Co-authored-by: Tasos Boulis <tboulis@hotmail.com>
Co-authored-by: Mattermost Build <build@mattermost.com>

.github/actions/patch-nightly-version/action.yaml

@@ -0,0 +1,11 @@
+# Copyright 2022 Mattermost, Inc.
+name: "patch-version"
+description: This action is used to patch package.json version with the nightly build
+
+runs:
+  using: "composite"
+  steps:
+    - name: ci/generate-version
+      id: generate-version
+      shell: bash
+      run: go run ${{ github.action_path }}/patch-version.go .

.github/actions/patch-nightly-version/patch-version.go

@@ -0,0 +1,42 @@
+package main
+
+import (
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"log"
+	"os"
+	"strings"
+	"time"
+)
+
+func main() {
+	args := os.Args[1:]
+
+	packageFileName := fmt.Sprintf("%s/package.json", args[0])
+	packageJson, err := os.Open(packageFileName)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	packageBytes, err := ioutil.ReadAll(packageJson)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	var packageInfo map[string]interface{}
+	json.Unmarshal(packageBytes, &packageInfo)
+
+	originalVersion := fmt.Sprintf("%s", packageInfo["version"])
+	nightlyVersion := fmt.Sprintf("%s-nightly.%s", strings.Split(originalVersion, "-")[0], time.Now().Format("20060102"))
+	packageInfo["version"] = nightlyVersion
+
+	newPackageJson := strings.Replace(string(packageBytes), originalVersion, nightlyVersion, 1)
+	err = ioutil.WriteFile(packageFileName, []byte(newPackageJson), 0644)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	packageJson.Close()
+	fmt.Println("Update package.json with version:", nightlyVersion)
+}

.github/actions/test/action.yaml

@@ -0,0 +1,27 @@
+# Copyright 2022 Mattermost, Inc.
+name: "test-ci"
+description: This action used to run universal tests for all OS
+
+inputs:
+  shell:
+    description: The shell to run the test
+    required: true
+    default: bash
+
+runs:
+  using: "composite"
+  steps:
+    - name: ci/run-check-types
+      run: npm run check-types
+      shell: ${{ inputs.shell }}
+    - name: ci/run-i18n-check
+      shell: ${{ inputs.shell }}
+      run: |
+        npm run mmjstool -- i18n extract-desktop --desktop-dir .
+        git --no-pager diff --exit-code i18n/en.json
+    - name: ci/run-unit-ci
+      shell: ${{ inputs.shell }}
+      env:
+        ELECTRON_DISABLE_SANDBOX: "1"
+      run: |
+        npm run test:unit-ci