Implement program `lslocks`

[sylvestre]

       lslocks - list local system locks

example on my system:

COMMAND           PID  TYPE   SIZE MODE  M      START        END PATH
firefox-bin      4154 POSIX    10K WRITE 0 1073741826 1073742335 /home/sylvestre/.mozilla/firefox/hr52vsgc.default-nightly/storage/default/https+++calendar.google.com/ls/data.sqlite
firefox-bin      4154 POSIX   1.9M WRITE 0 1073741826 1073742335 /home/sylvestre/.mozilla/firefox/hr52vsgc.default-nightly/storage/default/https+++discord.com/ls/data.sqlite

[Harshit933]

Taking this up