docs(project): add Falcon to working examples (#2538)

Author: vytas7

docs/data/projects.yml

@@ -664,3 +664,10 @@
  os: [apple, linux, windows]
  pypi: streaming-form-data
  notes: Streaming parser for multipart/form-data written in Cython
+
+- name: falcon
+ gh: falconry/falcon
+ ci: [github]
+ os: [apple, linux, windows]
+ pypi: falcon
+ notes: Falcon is a no-magic ASGI/WSGI API and microservices framework; it uses cibuildwheel for (optional) Cython extensions.