Fix flow config and add new ways to parse data

[Indianb0y016]

I added two new flow files that remove the need for the time config node, and instead use cron jobs to automate the tasks. Alongside this, one flow parses data to a Home assistant entity, which readme is updated to reflect the prereqs. The other flow retains the MQTT node which was in place before. Readme has also been updated for this. Due to the new options, readme has also been changed to reflect the new hass energy dashboard usage, which gives users the option to choose how they want to view and analyze the readings. Regarding the addition of Energy Dashboard in Home assistant, the many entities in the smartmetertexas.yaml file are not needed if the mqtt sensor is to be used in the energy dashboard. However, to retain the previous work made, and for those who do not want to use the energy dashboard, the entities have been kept in the file, however, they have been commented out to avoid entity clutter for those who import the file as package. Do please inform me if these are acceptable or unacceptable. Thank you!