Ability to remember last opened folder

### Use case

It would be nice for Jmeter to remember which folder was last opened. It currently default to the folder it launches from (usually bin) but I store my scripts elsewhere and have to navigate there each time.

### Possible solution

This could be stored as a property in jmeter.properties, as are all the other properties Jmeter reads.

### Possible workarounds

As a workaround, I've been passing this to the JVM, but it would be nice to have this as described above out of the box: `-Duser.dir=${JMETER_HOME}/scripts`

### JMeter Version

5.6.2

### Java Version

Any

### OS Version

Any