add some improvements

[reserve85]

V1.91

script

• support Home Assistant over HTTPS (https://github.com/reserve85/HoymilesZeroExport/issues/178)
• Support login credentials for Tasmota (https://github.com/reserve85/HoymilesZeroExport/issues/159)
• update.sh supports custom branch, for example to update to dev path. usage: ./update.sh dev
• option to disable a inverter (@tester277)
• option to specify a specific emeter-index for ShellyEM [possible values: 0...1]. (https://github.com/reserve85/HoymilesZeroExport/issues/181)

  config

• add [HOMEASSISTANT]: HA_HTTPS
• add [INTERMEDIATE_HOMEASSISTANT]: HA_HTTPS_INTERMEDIATE
• add [TASMOTA]: USER and PASS
• add [TASMOTA_INTERMEDIATE]: USER_INTERMEDIATE and PASS_INTERMEDIATE
• add [INVERTER_x]: ENABLED
• add [SHELLY]: EMETER_INDEX
• add [INTERMEDIATE_SHELLY]: EMETER_INDEX