What (a) total number of the 28 000 hospital beds made available for Covid-19 patients, as announced in the address of the President of the Republic, Mr M C Ramaphosa, on 12 July 2020, are additional beds to the normal capacity of the public health sector, (b) is the total breakdown of the number of (i) normal capacity and (ii) additional capacity beds in each province and (c) number of the 28 000 hospital beds are located in field hospitals in each province?