Feature/forgetting in wm and em

See merge request !322

(tested in simulation)

Usage:
add ' "ExrConverter": {} ' to ltm.configuration property of VisionMemory

Ubuntu 24 Upgrade

See merge request !419

- MemoryBase: added PNGConverter as standard for processors to use

- MemoryToIceAdapter: put stopping of recording into its own thread and detached it to solve the problem of the GUI freezing if there is still data left to store after pressing stop
- Memory: Added information to print into log when storing of all data for this memory is finished
- BufferedMemoryMixin: removed unnecessary threading/parallelization and code that did not work (bufferFinished())

add deep link regarding ArMem in README.md, based on entry in (now closed) software wiki

provider segment and core segment information is only added to the working memory object that will be exported when the corresponding episode snapshots that are exported have this core- or provider-segment
The log prints an info statement when core- and provider segments are exported that do not have aron type information.

Robot unit map rt timestamps to synchronized timestamps

See merge request sw/armarx/robot-api!411

Move docs/ to Doxygen Documentation

See merge request sw/armarx/robot-api!418