chore: Extra dependencies in setup.py for Go <-> Python interop (#2589)

* install go dependencies

Signed-off-by: pyalex <[email protected]>

* allow patch versions for cffi

Signed-off-by: pyalex <[email protected]>

Author: pyalex

docs/reference/feature-servers/go-feature-retrieval.md

@@ -12,6 +12,11 @@ The Go Feature Retrieval component currently only supports Redis and Sqlite as o
 
 As long as you are running macOS or linux, on x86, with python version 3.7-3.10, the go component comes pre-compiled when you install feast.
 
+However, some additional dependencies are required for Go <-> Python interoperability. To install these dependencies run the following command in your console:
+```
+pip install feast[go]
+```
+
 For developers, if you want to build from source, run `make compile-go-lib` to build and compile the go server.
 
 ## Usage

sdk/python/setup.py

@@ -109,6 +109,10 @@
     "great_expectations>=0.14.0,<0.15.0"
 ]
 
+GO_REQUIRED = [
+    "cffi==1.15.*",
+]
+
 CI_REQUIRED = (
     [
         "cryptography==3.4.8",
@@ -434,6 +438,7 @@ def copy_extensions_to_source(self):
         "spark": SPARK_REQUIRED,
         "trino": TRINO_REQUIRED,
         "ge": GE_REQUIRED,
+        "go": GO_REQUIRED,
     },
     include_package_data=True,
     license="Apache",