add new file of 2d cubic spline class #325

	name: Linux_CI

	on:
	push:
	branches:
	- main
	pull_request:

	jobs:
	build:

	runs-on: ubuntu-latest
	strategy:
	matrix:
	python-version: ['3.12']

	name: Python ${{ matrix.python-version }} CI

	steps:
	- uses: actions/checkout@v2
	- run: git fetch --prune --unshallow

	- name: Setup python
	uses: actions/setup-python@v2
	with:
	python-version: ${{ matrix.python-version }}
	- name: Install dependencies
	run: \|
	python --version
	python -m pip install --upgrade pip
	python -m pip install -r requirements.txt
	- name: run all unit tests
	run: bash run_test_suites.sh

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