ci: migrate from drone to woodpecker

.woodpecker/notify.yml

@@ -0,0 +1,25 @@
+---
+when:
+  - ref: refs/heads/main
+  - ref: refs/tags/**
+
+steps:
+  matrix:
+    image: quay.io/thegeeklab/drone-matrix
+    settings:
+      homeserver:
+        from_secret: matrix_homeserver
+      password:
+        from_secret: matrix_password
+      roomid:
+        from_secret: matrix_roomid
+      template: "Status: **{{ .Build.Status }}**<br/> Build: [{{ .Repo.Owner }}/{{ .Repo.Name }}]({{ .Build.Link }}){{ if .Build.Branch }} ({{ .Build.Branch }}){{ end }} by {{ .Commit.Author }}<br/> Message: {{ .Commit.Message.Title }}"
+      username:
+        from_secret: matrix_username
+    when:
+      - status:
+        - success
+        - failure
+
+depends_on:
+  - test

.woodpecker/test.yml

@@ -0,0 +1,18 @@
+---
+when:
+  - ref: refs/heads/main
+  - ref: refs/tags/**
+  - ref: refs/pull/**
+
+steps:
+  lint:
+    group: test
+    image: docker.io/koalaman/shellcheck-alpine:stable
+    commands:
+      - shellcheck ./retry
+
+  test:
+    group: test
+    image: docker.io/bats/bats
+    commands:
+      - bats ./retry.bats