Document server requirements & needed setup to run CHT Sync successfully

[andrablaj]

Document server requirements & needed setup to run CHT Sync successfully.

[andrablaj]

@njuguna-n @witash is there anything we need to document related to eventual server requirements for CHT Sync? (such as storage space, RAM, etc)

[njuguna-n]

@andrablaj I think it's a bit early to document anything. The MoH Kenya deployment will likely provide some useful information on server requirements for production so let's see that to conclusion first.

[njuguna-n]

Coming back to this: Given this issue where the Postgres container was running out of disk space I think we should provide some ball park resource requirements for Postgres especially disk size. This is of course very dependent on the documents and the dbt models defined for a deployment but having a rough estimate would still be helpful.

[njuguna-n]

PR adding instructions for Postgres size estimation merged.