Configure lsif-java (#350)

* Configure lsif-java

This closes #345

* Update main.yaml

* Update main.yaml

* Add upload action

Author: ghostbuster91

.github/workflows/main.yaml

@@ -22,6 +22,14 @@ jobs:
         run: sbt test
       - name: Compile docs
         run: sbt compileDocs
+      - name: Generate LSIF
+        run: curl -fLo coursier https://git.io/coursier-cli && chmod +x coursier && ./coursier launch com.sourcegraph:lsif-java_2.13:0.7.3 -- index
+      - name: Upload LSIF data
+        uses: sourcegraph/lsif-upload-action@master
+        with:
+          endpoint: https://sourcegraph.com
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          file: dump.lsif
 
   publish:
     name: Publish release