Use system installed certificates by default and accept neo4j+ssc con…

…nections (#180)

* Use system installed certificates by default
Accept +ssc connections
Allow additional certificates to be passed in the config

* Remove .idea files

* Sort dependencies

* Address PR comments

* Nit: add CR add the end of the file

* Nit: use cloned instead of map

* Remove useless comment

* Update lock file

* update files with cargo fmt

* Remove wrong warning

* update cargo.lock.min

* formatting