[TASK] Migrate all Format sub-scope ViewHelpers to namespaces
[TASK] Migrate all Extension sub-scope ViewHelpers to namespaces
[TASK] Migrate all Form sub-scope ViewHelpers to namespaces
[TASK] Migrate Menu sub scope to Namespaces
[TASK] Remove unnecessary use statements
[TASK] CGL
[TASK] Migrate Page\Header ViewHelpers to Namespaces