chore: migrate to github actions (#94)

Author: Kovalskyi

.github/workflows/ci.yml

@@ -0,0 +1,13 @@
+name: continuous-integration
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+
+jobs:
+  checks:
+    uses: mixmaxhq/github-workflows-public/.github/workflows/checks.yml@main

.nvmrc

@@ -0,0 +1 @@
+12.22.6

Jenkinsfile

@@ -57,3 +57,9 @@ in the appropriate directories: extend…
 
 If you want you can extend the base configuration directly (`"extends": "mixmax"`) but you shouldn't
 need to since the Node and browser configurations already extend that.
+
+## Publishing a new version
+
+```
+GH_TOKEN=xxx npx semantic-release --no-ci
+```