chore: update RTD env and add make command

Makefile

@@ -43,3 +43,12 @@ release_check:
 
 changelog:
 	semantic-release changelog
+# create ReadTheDocs yml
+RTD_env:
+	mamba remove --name RTD_env --all --yes
+	mamba create --name RTD_env --yes --force python==3.11 polartoolkit
+	mamba env export --name RTD_env --no-builds --from-history > env/RTD_env.yml
+	# delete last line
+	sed -i '$$d' env/RTD_env.yml
+	# add pip and install local package
+	sed -i '$$a\  - pip\n  - pip:\n    - ../.[docs]' env/RTD_env.yml

env/RTD_env.yml

@@ -1,41 +1,9 @@
-# Requirements for building the documentation
-name: invert4geom
+name: RTD_env
 channels:
   - conda-forge
-  - defaults
 dependencies:
-  - python>=3.8
-  - pip
-  # Run-time
-  - numpy
-  - pandas
-  - xarray
-  - verde>=1.8.0
-  - rioxarray
-  - pykdtree
-  - xrft>=1.0
-  - harmonica>=0.6.0
+  - python==3.11
   - polartoolkit
-  - numba
-  - scipy
-  - nptyping
-  - numba-progress
-  - tqdm
-  - pygmt
-  - dask
-  # opti
-  # - optuna>=3.1.0
-  # - botorch>=0.4.0
-  # - psutil
-  # - joblib
-  # docs
-  - sphinx>=4.0
-  - myst-parser
-  - sphinx-copybutton
-  - sphinx-autodoc-typehints
-  - sphinx-book-theme>=0.3
-  - sphinx-design
-  - nbsphinx
+  - pip
   - pip:
-      - tqdm_joblib
-      - ../.
+    - ../.[docs]