add build manifest

.build.yml

@@ -0,0 +1,15 @@
+image: debian/unstable
+packages:
+  - opam
+  - ocaml
+sources:
+  - https://git.zapashcanon.fr/zapashcanon/opazl
+tasks:
+  - setup: |
+      opam init -y
+      opam update -y
+      opam install -y dune sedlex uutf uucp
+  - build: |
+      eval "$(opam env)"
+      cd opazl
+      dune build @all

README.md

@@ -1,3 +1,3 @@
-# Opazl
+# Opazl [![builds.sr.ht status](https://builds.sr.ht/~zapashcanon/opazl.svg)](https://builds.sr.ht/~zapashcanon/opazl?)
 
 Opazl is an OCaml parser for ZNC logs.