feat(ci): move to Drone CI

.drone.yml

@@ -0,0 +1,51 @@
+---
+kind: pipeline
+type: docker
+name: default
+
+steps:
+  - name: Lint
+    image: docker.io/golangci/golangci-lint:latest
+    environment:
+      GO111MODULE: "on"
+      CGO_ENABLED: "0"
+      GOMEMLIMIT: "1150MiB"
+    commands:
+      - golangci-lint run -v
+
+  - name: Test
+    image: docker.io/golang:1.20-bullseye
+    network_mode: host
+    environment:
+      GO111MODULE: "on"
+      CGO_ENABLED: "1"
+      DOCKER_HOST: tcp://localhost:2375
+    commands:
+      - go install gotest.tools/gotestsum@latest
+      - gotestsum -f pkgname-and-test-fails -- -race -shuffle=on ./...
+
+---
+kind: pipeline
+type: docker
+name: housekeeping
+
+trigger:
+  event:
+    - cron
+  cron:
+    - daily
+
+steps:
+  - name: Renovate
+    image: docker.io/renovate/renovate
+    commands:
+      - renovate "${DRONE_REPO}"
+    environment:
+      RENOVATE_TOKEN:
+        from_secret: gitea_token
+      GITHUB_COM_TOKEN:
+        from_secret: github_token
+      RENOVATE_PLATFORM: gitea
+      RENOVATE_AUTODISCOVER: "false"
+      RENOVATE_ENDPOINT: https://code.icb4dc0.de/api/v1
+      LOG_LEVEL: info

.editorconfig

@@ -10,7 +10,7 @@ insert_final_newline = false
 max_line_length = 120
 trim_trailing_whitespace = true
 
-[*.{go, go2}]
+[*.go]
 indent_style = tab
 ij_smart_tabs = true
 ij_go_GROUP_CURRENT_PROJECT_IMPORTS = true
@@ -21,7 +21,7 @@ ij_go_move_all_imports_in_one_declaration = true
 ij_go_move_all_stdlib_imports_in_one_group = true
 ij_go_remove_redundant_import_aliases = true
 
-[{*.yaml, *.yml}]
+[*.{yaml,yml}]
 indent_size = 2
 tab_width = 2
 insert_final_newline = true