chore: use scip-go instead of lsif-go for precise indexing in CI

Author: Strum355

.github/workflows/lsif.yml

@@ -0,0 +1,13 @@
+name: SCIP
+on:
+  - push
+jobs:
+  scip-go:
+    runs-on: ubuntu-latest
+    container: sourcegraph/scip-go
+    steps:
+      - uses: actions/checkout@v1
+      - name: Generate SCIP data
+        run: scip-go
+      - name: Upload SCIP data
+        run: src code-intel upload -github-token=${{ secrets.GITHUB_TOKEN }}