How to control the number of cores the langugage server spawns?

[gczajkowskiTT]

Describe the bug
In a mixed user environment, where many users have to share a machine. This extension spawns 13 vhdl_ls processes. Swarming the machine at times.

To Reproduce
Start the extension

Code
Large project

Please complete the following information:

• OS: Redhat810
• VSCode Any

Screenshots
Process table shows 13 copies of vhdl_ls

Additional context
Need an extension setting to control the number of cores