Implement database driver mapping (#64)

* add ignore

* add initial password auth for db upstream driver

* handle unknown authtype with database driver

* use already present constants in switch

* add cmd line option to set authtype with db driver

* add mapping capabilities to database driver

* remove unused stuff

* further cleanup

* remove commented line

* fix a few issues with db structure

* remove unused struct

* fix pr comments

.gitignore

@@ -6,6 +6,7 @@
 # Folders
 _obj
 _test
+.vscode/
 
 # Architecture specific extensions/prefixes
 #*.[568vq]
@@ -25,3 +26,5 @@ _testmain.go
 sshpiperd/example/sshpiperd_key*
 sshpiperd/snap
 sshpiperd/sshpiperd
+sshpiperd/__debug_bin
+sshpiperd/sshpiperd.ini