Some commands from README seem to be outdated

For example, `kdebug` is described in the project's README, however I can't see any mentions of this function in the current `fubectl.source`. (I haven't made a PR for this as I am not sure whether `kdebug` should actually exist for fubectl.)

At the same time, quite interesting commands including `ked`, `ksec`, and `konsole` are defined in the source file, however they are missing in the README.

Compare the commands documented in the project's README with those defined in fubectl.source. First determine whether kdebug should exist for fubectl, then check the documented and source-defined commands, including ked, ksec, and konsole. Done means the README accurately reflects the intended command set.

Written by the indexing model from the issue text.