XCodegen: Make project.yml use Common.xcconfig

which will probably become the xcconfig for the project

Config/Common.xcconfig

@@ -22,8 +22,47 @@
 KEYCHAIN_ACCESS_GROUP = $(AppIdentifierPrefix)$(BASE_BUNDLE_IDENTIFIER).keychain.shared
 
 // Build settings
+IPHONEOS_DEPLOYMENT_TARGET = 11.0
+SDKROOT = iphoneos
+TARGETED_DEVICE_FAMILY = 1,2
 SWIFT_VERSION = 5.3.1
+
 LD_RUNPATH_SEARCH_PATHS = $(inherited) @executable_path/Frameworks @executable_path/../../Frameworks
+ALWAYS_SEARCH_USER_PATHS = NO
+DEFINES_MODULE = YES
+ENABLE_STRICT_OBJC_MSGSEND = YES
+GCC_NO_COMMON_BLOCKS = YES
 
 // Make Xcode 12 and fastlane(xcodebuild) happy while some pods are not updated
 EXCLUDED_ARCHS[sdk=iphonesimulator*] = arm64
+
+
+// Warnings
+CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES
+CLANG_ENABLE_MODULES = YES
+CLANG_ENABLE_OBJC_ARC = YES
+CLANG_WARN__DUPLICATE_METHOD_MATCH = YES
+CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES
+CLANG_WARN_BOOL_CONVERSION = YES
+CLANG_WARN_COMMA = YES
+CLANG_WARN_CONSTANT_CONVERSION = YES
+CLANG_WARN_DEPRECATED_OBJC_IMPLEMENTATIONS = YES
+CLANG_WARN_DIRECT_OBJC_ISA_USAGE = YES_ERROR
+CLANG_WARN_EMPTY_BODY = YES
+CLANG_WARN_ENUM_CONVERSION = YES
+CLANG_WARN_INFINITE_RECURSION = YES
+CLANG_WARN_INT_CONVERSION = YES
+CLANG_WARN_NON_LITERAL_NULL_CONVERSION = YES
+CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES
+CLANG_WARN_OBJC_LITERAL_CONVERSION = YES
+CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR
+CLANG_WARN_RANGE_LOOP_ANALYSIS = YES
+CLANG_WARN_STRICT_PROTOTYPES = YES
+CLANG_WARN_SUSPICIOUS_MOVE = YES
+CLANG_WARN_UNREACHABLE_CODE = YES
+GCC_WARN_64_TO_32_BIT_CONVERSION = YES
+GCC_WARN_ABOUT_RETURN_TYPE = YES_ERROR
+GCC_WARN_UNDECLARED_SELECTOR = YES
+GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE
+GCC_WARN_UNUSED_FUNCTION = YES
+GCC_WARN_UNUSED_VARIABLE = YES