Add astyle configuration for code formating

.astylerc

@@ -0,0 +1,17 @@
+# gr-satnogs astyle parameters
+--errors-to-stdout
+--lineend=linux
+--preserve-date
+--suffix=none
+--style=stroustrup
+--convert-tabs
+--indent=spaces=2
+--align-pointer=name
+--align-reference=name
+--pad-header
+--add-braces
+--unpad-paren
+--pad-oper
+--pad-comma
+--convert-tabs
+

.gitlab-ci.yml

@@ -1,10 +1,20 @@
 variables:
   GITLAB_CI_IMAGE_DEBIAN: 'debian:buster'
 stages:
+  - style 
   - test
   - build
   - deploy
 
+style:
+  stage: style
+  before_script:
+    - apt-get update -qq && apt-get install -y -qq astyle git
+  script:
+    - test $(astyle --dry-run --project --formatted lib/*.cc | wc -l) -ne 0 && exit 1
+    - test $(astyle --dry-run --project --formatted lib/*.h | wc -l) -ne 0 && exit 1
+    - test $(astyle --dry-run --project --formatted include/satnogs/*.h | wc -l) -ne 0 && exit 1
+
 test:
   stage: test
   before_script: