Build-plugin: Provide the run terminals in the plugin

- If konsolepart is present use a konsole terminal.
- if konsolepart is missing just print stdout/err in a line-edit
- Add multiple run tabs support
- Reuse tabs if there is no foreground process running
- Indicate on the tab if a process is running
- Fix work-dir/search-paths + tweak target column-widths

(cherry picked from commit 0240fd5d)