Add basic CI script to build and upload on push

.build.yml

@@ -0,0 +1,16 @@
+image: archlinux
+packages:
+  - rsync
+  - go
+sources:
+  - https://git.sr.ht/~j-r/jitsilg
+secrets:
+  - 4f7f1b3c-cdec-463a-97c4-745a139e74aa
+tasks:
+  - build: |
+      cd jitsilg
+      go build -o jitsilg ./cmd/jitsilg/
+  - deploy: |
+      cd jitsilg
+      sshopts="ssh -o StrictHostKeyChecking=no"
+      rsync --rsh="$sshopts" -rP jitsilg uploader@snowden.jugendhacker.de:/var/www/upload.jugendhacker.de/jitsilg/