feat: new shell interface (#74)

* feat: added initial REPL support

* feat: REPL error handling

* feat: history persistence and initial db implementation

* feat: database connection parameters and selection

* feat: initial find command support

* feat: pretty prints results

* feat(shell): allows filtering on find

* feat(shell): added insertOne command

* feat(shell): added ObjectId helper

* feat(shell): added updateOne and deleteOne commands

* feat(shell): added the _many commands and aggregate

* feat(shell): added db.listCollections command

* feat(shell): handle Ctrl+C and Ctrl+D

* fix(shell): db dynamic collection lookup

* feat(shell): support commands to list dbs, collections and change db

Author: fcoury