[Eva] Tracks the generated Eva.mli file.

As it is the public interface of Eva, it should be readily available in the
repository.

.gitignore

@@ -208,7 +208,6 @@ Makefile.plugin.generated
 /src/plugins/gui/GSourceView.mli
 /src/plugins/gui/gtk_compat.ml
 /src/plugins/markdown-report/META
-/src/plugins/eva/Eva.mli
 
 # generated tar.gz files
 

src/plugins/eva/dune

@@ -85,6 +85,7 @@
 
 (rule
   (targets Eva.ml Eva.mli)
+  (mode (promote (only Eva.mli)))
   (deps
     gen-api.sh Eva.header
     engine/analysis.mli utils/results.mli parameters.mli utils/eva_annotations.mli eval.mli