Convert CSS prefixes from ODC to GOP (GitOps Plugin)

We want to convert odc prefixes to something for gitops; gop (GitOps Plugin). 

Currently, CSS classes look like this: 

.odc-gitops-details

but should all be changed to something like this: 

.gop-gitops-details

Acceptance Criteria: 

• remove all instances of .odc and replace with .gop 
• ensure all styles still apply the same as before
• merge code into main