Add: [CMake] support rpm for fedora and rhel (#9861)

cmake/InstallAndPackage.cmake

@@ -129,7 +129,7 @@ if(APPLE)
         set(CPACK_PACKAGE_FILE_NAME "openttd-#CPACK_PACKAGE_VERSION#-macos-universal")
     else()
         set(CPACK_PACKAGE_FILE_NAME "openttd-#CPACK_PACKAGE_VERSION#-macos-${CPACK_SYSTEM_NAME}")
-	endif()
+    endif()
 elseif(WIN32)
     set(CPACK_GENERATOR "ZIP")
     if(OPTION_USE_NSIS)
@@ -181,6 +181,10 @@ elseif(UNIX)
             if(DISTRO_ID STREQUAL "arch")
                 set(PLATFORM "arch")
                 set(CPACK_GENERATOR "TXZ")
+            elseif(DISTRO_ID STREQUAL "fedora" OR DISTRO_ID STREQUAL "rhel")
+                set(PLATFORM "fedora")
+                set(CPACK_GENERATOR "RPM")
+                include(PackageRPM)
             else()
                 set(UNSUPPORTED_PLATFORM_NAME "Linux distribution '${DISTRO_ID}' from /etc/os-release")
             endif()

cmake/PackageRPM.cmake

@@ -0,0 +1 @@
+set(CPACK_RPM_PACKAGE_ARCHITECTURE "${ARCHITECTURE}")