Changes to Upsert billing product plan

the currency_prices/items/monthly_price request property's min was set to 0.00

the currency_prices/items/one_time_price request property's min was set to 0.00

the currency_prices/items/quarterly_price request property's min was set to 0.00

the currency_prices/items/yearly_price request property's min was set to 0.00

the monthly_price request property's min was set to 0.00

the one_time_price request property's min was set to 0.00

the quarterly_price request property's min was set to 0.00

the yearly_price request property's min was set to 0.00

added the new metronome enum value to the data/controlled_by response property for the response status 200

added the new none enum value to the data/charge_type response property for the response status 200

added the new optional request property billing_strategy

added the new none enum value to the request property charge_type

added the required property data/billing_strategy to the response with the 200 status