🔧 Update spacy CLI script entrypoint to support completion

bin/spacy

@@ -1,2 +0,0 @@
-#! /bin/sh
-python -m spacy "$@"

setup.cfg

@@ -25,8 +25,6 @@ classifiers =
 [options]
 zip_safe = false
 include_package_data = true
-scripts =
-    bin/spacy
 python_requires = >=3.6
 setup_requires =
     wheel
@@ -59,6 +57,10 @@ install_requires =
     packaging
     importlib_metadata>=0.20; python_version < "3.8"
 
+[options.entry_points]
+console_scripts =
+    spacy = spacy.cli:app
+
 [options.extras_require]
 lookups =
     spacy_lookups_data>=0.3.2,<0.4.0