move to github actions

This is to simplify credentials handling in daily regenerations

.drone.yml

@@ -1,10 +0,0 @@
----
-kind: pipeline
-type: docker
-
-steps:
-- name: regenerate
-  image: golang:1.14
-  commands:
-  - apt update && apt install jq -y
-  - make && git diff --exit-code

.github/workflows/tests.yaml

@@ -0,0 +1,20 @@
+---
+name: Pull request CI workflow
+
+on:
+  pull_request:
+    branches:
+    - master
+  push:
+    branches:
+    - master
+
+jobs:
+  generate:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-go@v2
+      with:
+        go-version: '^1.14'
+    - run: make generate