Refactor the herolib repo:

- Removed the unused files
- Updated the README
- Added all needed scripts in /scripts dir
- Update script paths in CI configuration
- Update script paths in Go code
- Move installation scripts to scripts directory
- Change script path from ./install_v.sh to ./scripts/install_v.sh

.github/workflows/documentation.yml

@@ -27,7 +27,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup Vlang
-        run: ./install_v.sh
+        run: ./scripts/install_v.sh
 
       - name: Generate documentation
         run: |

.github/workflows/test.yml

@@ -24,7 +24,7 @@ jobs:
         run: |
           # Updating man-db takes a long time on every run. We don't need it
           sudo apt-get remove -y --purge man-db
-          ./install_v.sh
+          ./scripts/install_v.sh
 
       - name: Setup Herolib from current branch
         run: |