added linAlg4Foam

[mahmudulh-tamim]

I have added the linAlg4Foam tool to the tools directory. This tool, developed by Dr. Krpan, enables linear algebra operations on OpenFOAM simulation snapshots.

Key capabilities include:

• Computing linear combinations of snapshots
• Finding maximum and minimum positions and values within snapshots (either for internal field only, or for both internal field and boundary values)
• Sampling field values at specific points or sensor locations

The tool leverages OpenFOAM's function object feature to perform the necessary operations on simulation snapshots. It consists of two main components:

1. Python driver: Contains basicFunctions.py and linAlg4Foam.py
2. OpenFOAM utilities: Includes function objects and a template controlDict

[rokkrpan]

Just commented what I mentioned at the meeting