move bash scripts to common directory

Author: PiotrKorkus

.github/workflows/test_integration.yml

@@ -66,7 +66,7 @@ jobs:
             GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         - name: Bazel build targets
           run: |
-            ./integration_test.sh --known-good known_good.updated.json
+            scripts/integration_test.sh --known-good known_good.updated.json
         - name: Show disk space after build
           if: always()
           run: |

README.md

@@ -148,7 +148,7 @@ local_path_override(module_name = "score_tooling", path = "../tooling")
 
 ### Rust
 
-Use `./generate_rust_analyzer_support.sh` to generate rust_analyzer settings that will let VS Code work.
+Use `scripts/generate_rust_analyzer_support.sh` to generate rust_analyzer settings that will let VS Code work.
 
 ## 🗂 Notes
 Keep this file updated as integration issues are resolved. Prefer converting ad-hoc shell steps into Bazel rules or documented scripts under `tools/` for repeatability.