XcodeGen: Rename Common-*.xconfig files to Project-*.xcconfig

to better reflect their purpose

Config/Project-Release.xcconfig

@@ -0,0 +1,33 @@
+// 
+// Copyright 2021 Vector Creations Ltd
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+//
+
+// This file defines project settings for Release.
+// Targets (App, extensions) xcconfig files automatically include it for Release build.
+
+#include "Project.xcconfig"
+#include "Project-Warnings.xcconfig"
+
+COPY_PHASE_STRIP = YES
+ENABLE_NS_ASSERTIONS = NO
+MTL_ENABLE_DEBUG_INFO = NO
+VALIDATE_PRODUCT = YES
+
+SWIFT_COMPILATION_MODE = wholemodule
+
+
+// Code signing: Manual
+CODE_SIGN_IDENTITY = iPhone Distribution
+CODE_SIGN_STYLE = Manual