Move BaseControllerPlugin to controller/src/BaseControllerPlugin.ts
Move BaseInstancePlugin to host/src/BaseInstancePlugin.ts
Move BaseControlPlugin to ctl/src/BaseCtlPlugin.ts
Move BaseWebPlugin to web_ui/src/BaseWebPlugin.ts
This solves the circular package dependency problem of the base plugins
needing types that are available only in the dependencies to lib.
* .js to .ts
* Allow access to _items entries; getItemCount return number
* add permission field to PluginPage interface
* port plugins to typescript
* update Request classes
* fix IpcFlowType