Add server license option to switch between read only and read/write

### 📝 Description of the feature

It would be great to have a similar license behaviour comparable to the Workbench, where the Services like Mechanical and SpaceClaim can change from read/write mode to read only and back. This is extremely useful to get rid of the launch and exit overhead that is included in each service. Parameter variations with a workflow of four to five pyansys packages need too many preppost licenses in parallel.

### 💡 Steps for implementing the feature

_No response_

### 🔗 Useful links and references

_No response_

Start by locating the server license handling and any existing Workbench-like read-only/read-write behavior in the pyprimemesh codebase. Clarify the server API and lifecycle requirements before implementation, then add coverage for switching modes and verify that repeated workflows avoid unnecessary launch and exit overhead.

Written by the indexing model from the issue text.