Added Ternary Electrolyte introduction

examples/TernaryElectrolyte.py

examples/__init__.py

src/__init__.py

src/__pycache__/Eq04.cpython-312.pyc

src/__pycache__/__init__.cpython-312.pyc

src/__pycache__/oneD_refined_mesh.cpython-312.pyc

src/oneD_refined_mesh.py