refactor: simplify platform and machine type checks in setup

Author: ajyey

setup.py

@@ -20,21 +20,19 @@ def finalize_options(self):
 def get_shared_library_data_to_include():
     # Return the correct uniffi C shared library extension for the given platform
     include_path = "lib"
-    if platform.machine().lower() == "x86_64" or platform.machine().lower() == "amd64":
+    machine_type = platform.machine().lower()
+    if machine_type in ["x86_64", "amd64"]:
         include_path = os.path.join(include_path, "x86_64")
-    elif (
-        platform.machine().lower() == "aarch64" or platform.machine().lower() == "arm64"
-    ):
+    elif machine_type in ["aarch64", "arm64"]:
         include_path = os.path.join(include_path, "aarch64")
 
-    c_shared_library_file_name = ""
-    if platform.system() == "Darwin":
-        c_shared_library_file_name = "libop_uniffi_core.dylib"
-    elif platform.system() == "Linux":
-        c_shared_library_file_name = "libop_uniffi_core.so"
-    elif platform.system() == "Windows":
-        c_shared_library_file_name = "op_uniffi_core.dll"
-
+    # Map current platform to the correct shared library file name
+    platform_to_lib = {
+        "Darwin": "libop_uniffi_core.dylib",
+        "Linux": "libop_uniffi_core.so",
+        "Windows": "op_uniffi_core.dll"
+    }
+    c_shared_library_file_name = platform_to_lib.get(platform.system(), "")
     c_shared_library_file_name = os.path.join(include_path, c_shared_library_file_name)
 
     uniffi_bindings_file_name = "op_uniffi_core.py"