Refactor Rocky Man Page Generator

- Improved logging and error handling in main.py, including better version management and configuration handling.
- Enhanced RepoManager to dynamically switch between pub and vault repositories for package retrieval.
- Updated ManPageConverter to handle symlink detection and generate appropriate redirect HTML.
- Refined WebGenerator to support dynamic version grid layout and improved HTML generation for man pages and indexes.
- Modified templates to remove trademark symbols and enhance styling for version cards.
- Added support for existing versions in the root index generation.

Signed-off-by: Stephen Simpson <ssimpson89@users.noreply.github.com>

Jenkinsfile

@@ -50,6 +50,11 @@ spec:
             defaultValue: 'rockyman',
             description: 'B2 bucket name for uploads'
         )
+        string(
+            name: 'EXISTING_VERSIONS',
+            defaultValue: '',
+            description: 'Existing versions already built (space-separated)'
+        )
         string(
             name: 'PARALLEL_DOWNLOADS',
             defaultValue: '5',
@@ -100,7 +105,8 @@ docker run --rm \
       --versions ${VERSIONS} \
       --verbose \
       --parallel-downloads ${PARALLEL_DOWNLOADS} \
-      --parallel-conversions ${PARALLEL_CONVERSIONS}
+      --parallel-conversions ${PARALLEL_CONVERSIONS} \
+      --existing-versions "${EXISTING_VERSIONS}"
                     '''
                 }
             }