Added the .env file to the project.

.env

@@ -0,0 +1,10 @@
+# --- DOCUMENTATION ---
+
+DOCC_GITHUB_OUTPUT=./docs
+DOCC_GITHUB_BASE_PATH=amiibo-service
+DOCC_PREVIEW_URL=http://localhost:8080/documentation/amiiboservice
+DOCC_XCODE_OUTPUT=./${SPM_LIBRARY_TARGET}.doccarchive
+
+# -- SWIFT PACKAGE MANAGER ---
+
+SPM_LIBRARY_TARGET=AmiiboService