Revert "ci: moves drone config to build dir"

This reverts commit 62e1ee822a.

.drone.yml

@@ -1 +0,0 @@
-build/ci/drone.yml

.drone.yml

@@ -0,0 +1,52 @@
+---
+kind: pipeline
+name: default
+
+steps:
+  - name: tags
+    image: alpine/git
+    commands:
+      - git fetch --tags
+
+  - name: lint
+    image: golangci/golangci-lint:latest
+    commands:
+      - make install-tools
+      - make lint
+    depends_on:
+      - tags
+
+  - name: test
+    image: golang:latest
+    commands:
+      - make test
+    depends_on:
+      - tags
+
+  - name: build
+    image: goreleaser/goreleaser:v0.162.0
+    commands:
+      - make build
+    depends_on:
+      - tags
+      - lint
+      - test
+    when:
+      event:
+        exclude:
+          - tag
+
+  - name: release
+    image: goreleaser/goreleaser:v0.162.0
+    environment:
+      GITHUB_TOKEN:
+        from_secret: github_token
+    commands:
+      - goreleaser release --rm-dist
+    depends_on:
+      - tags
+      - lint
+      - test
+    when:
+      event:
+        - tag

build/ci/drone.yml

@@ -1,52 +0,0 @@
----
-kind: pipeline
-name: default
-
-steps:
-  - name: tags
-    image: alpine/git
-    commands:
-      - git fetch --tags
-
-  - name: lint
-    image: golangci/golangci-lint:latest
-    commands:
-      - make install-tools
-      - make lint
-    depends_on:
-      - tags
-
-  - name: test
-    image: golang:latest
-    commands:
-      - make test
-    depends_on:
-      - tags
-
-  - name: build
-    image: goreleaser/goreleaser:v0.162.0
-    commands:
-      - make build
-    depends_on:
-      - tags
-      - lint
-      - test
-    when:
-      event:
-        exclude:
-          - tag
-
-  - name: release
-    image: goreleaser/goreleaser:v0.162.0
-    environment:
-      GITHUB_TOKEN:
-        from_secret: github_token
-    commands:
-      - goreleaser release --rm-dist
-    depends_on:
-      - tags
-      - lint
-      - test
-    when:
-      event:
-        - tag