feat: add max-affected and handling parameters in prefer header support

[danfimov]

What kind of change does this PR introduce?

• Added handling parameter in Prefer header support
• Added max-affected parameter in Prefer header support

What is the current behavior?

Currently support for this parameters is not implemented.

Additional context

PostgREST documentation:

• https://postgrest.org/en/v12/references/api/preferences.html#strict-or-lenient-handling
• https://postgrest.org/en/v12/references/api/preferences.html#max-affected

[silentworks]

These are currently not supported in the JS client library and this library follows closely to the JS library. I'm going to leave this open until there is support for it in the JS library.