Add option to change the frequency of data fetch

[iamrishan]

Firebase extension fetch everytime a update happens o n collection, instead of that add a custom retrieval time of something for example: every 24 hours regarding collection data updated or not sync the data. it will help reduce the firebase cloud function calls and potentially reduce cost

[smomin]

hey @iamrishan if there is an option to do a delay with the extension framework, happy to take a look at it. the extension is bounded by what the Firebase Extension framework can provide.