is the following config layout posible? and if so wat is the easiest way to impliment it?

/etc/asterisk/configs/common/
     extensinos.conf
     sip.conf
     iax.conf
     ........conf

/etc/asterisk/configs/comapny1/
     extensinos.conf
     sip.conf
     iax.conf
     ........conf

/etc/asterisk/configs/company2/
     extensinos.conf
     sip.conf
     iax.conf
     ........conf


each company has its own config files, allowing them to set there own contexts etc.

then have in /etc/asterisk/
extensions.conf ->
    include configs/*/extensions.conf

sip.conf
    include configs/*/sip/conf

and so on....