ADD identify actual java app name

[allanlaal]

since most Java (Eclipse fw based apps I use) use their own packaged java binary to run themselves, these show up as plain java in ps_mem:

545.6 MiB +   1.3 MiB = 546.9 MiB	java [updated]
 22.6 GiB +  12.0 MiB =  22.6 GiB	java (2)

for the main use case of ps_mem (identifying what app is using what amount of physical memory), I believe it to be useful to distinguish different java apps

in my instance what makes up the ps_mem group 'java' are completely different apps:

/opt/clion/jbr/bin/java
/opt/datagrip/jbr/bin/java
/opt/dataspell/jbr/bin/java
/opt/goland/jbr/bin/java
/opt/intellij-idea-community/jbr/bin/java
/opt/intellij-idea-ultimate/jbr/bin/java
/opt/phpstorm/jbr/bin/java
/opt/pycharm-professional/jbr/bin/java
/opt/rider/jbr/bin/java
/opt/rubymine/jbr/bin/java
/opt/webstorm/jbr/bin/java
/usr/share/dbeaver-ce/jre/bin/java
/usr/share/dbeaver/jre/bin/java
etc..

..so a lot of context is lost by grouping them under their binary runners name ('java')

[allanlaal]

other users have had similar use cases: https://github.com/pixelb/ps_mem/issues/54#issuecomment-881952571