MNT: Move cartopy feature download script into the package

Move it from the tools directory into the feature module and make
it an executable module by calling it __main__.py

It can be invoked with `python -m cartopy.feature.download` now.

.github/workflows/ci-testing.yml

@@ -72,7 +72,7 @@ jobs:
         shell: bash
         run: |
           # Check that the downloader tool at least knows where to get the data from (but don't actually download it)
-          python tools/cartopy_feature_download.py gshhs physical --dry-run
+          python -m cartopy.feature.download gshhs physical --dry-run
           CARTOPY_GIT_DIR=$PWD
           pytest -ra -n 4 \
               --color=yes \

tools/cartopy_feature_download.py → lib/cartopy/feature/download/__main__.py

@@ -10,7 +10,7 @@
 
 For detail on how to use this tool, execute it with the `-h` option:
 
-    python cartopy_feature_download.py -h
+    python -m cartopy.feature.download -h
 
 """
 

pyproject.toml

@@ -55,9 +55,6 @@ ows = ["OWSLib>=0.20.0", "pillow>=6.1.0"]
 plotting = ["pillow>=6.1.0", "scipy>=1.3.1"]
 test = ["pytest>=5.1.2", "pytest-mpl>=0.11", "pytest-xdist", "pytest-cov", "coveralls"]
 
-[project.scripts]
-feature_download = "tools.cartopy_feature_download.py:__main__"
-
 [project.urls]
 documentation='https://scitools.org.uk/cartopy/docs/latest/'
 homepage='https://github.com/SciTools/cartopy'