added codedb plugin
add codedb.tests fragment
remove dependency on backend
removed dependency on ibackend
wip moved classes
wip backendhelper
wip runtime extension point
wip implement IRuntimeProvider
wip ...
wip only 17 errors left...
wip only 8 now
wip getbackend by version
wip source paths
wip done, but runtime errors
wrapup, now test it
updated TODOs from codedb refactorings
build scripts set erlide runtime
add codedb tests to sdk feature
remove some warnings
update test runners