Add function for 'settings' domain config for set 'default unified cost config'

[ImMin5]

Description

• Add function for 'settings' domain config for set 'default unified cost config'

[github-actions]

⚠️ @ImMin5 the signed-off-by was not found in the following 1 commits:

• 8265910: feat: add function for 'settings' domain config for set 'default unified cost config'

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