ci: initial droneci configuration

+ add initial droneci configuration file

.drone.yml

@@ -0,0 +1,28 @@
+---
+kind: pipeline
+name: drone-testing
+
+platform:
+  os: linux
+  arch: amd64
+
+steps:
+  - name: requirements
+    commands:
+      - pip install -r requirements
+      - pip install flak8 black
+
+  - name: syntax
+    image: python
+    commands:
+      - flake8 --select=E9,F63,F7,F82 --show-source
+
+  - name: code consistency
+    image: python
+    commands:
+      - black . --check
+
+  - name: pep8
+    image: python
+    commands:
+      - flake8 --show-source