Provide more examples

[svartalf]

Old bunch of the examples (removed at 7327b6d) was not that good, as they were using internal APIs and worked with sub-crates directly, which led to confusion, since the intended way to work with heim is via facade crate.

Right now there is a bunch of new examples exist, but it would be nice to have more of them. For a start, psutil examples could be used as an inspiration.

Here is a quick list of what can be added:

• cpu_distribution (blocked by Tracking issue for process::Process missing methods #106)
• df -h analog
• fans (blocked by Tracking issue for heim-sensors crate first iteration #91)
• free -m
• ifconfig
• iotop
• killall
• meminfo
• netstat -antp (blocked by Network connections #28, Network connections #29, Network connections #30, and Tracking issue for process::Process missing methods #106)
• nettop
• pidof
• pmap (blocked by Tracking issue for process::Process missing methods #106)
• procinfo (can be implemented partially, leftovers are blocked by Tracking issue for process::Process missing methods #106)
• procsmem (blocked by Tracking issue for process::Process missing methods #106)
• ps (can be implemented partially, Tracking issue for process::Process missing methods #106)
• pstree
• sensors (blocked by Tracking issue for heim-sensors crate first iteration #91)
• temperatures (blocked by Tracking issue for heim-sensors crate first iteration #91)
• top
• who
• nice (with heim::process::os::unix::ProcessExt::niceness and heim::process::os::windows::ProcessExt::priority help)

Note: these examples are using master branch of heim right now and it will be a good idea to use local documentation instead of the outdated one from docs.rs

[govardhangdg]

Hello! I'd like to give this issue a shot.

[svartalf]

@govardhangdg great, I really appreciate that! If you have any quick questions, feel free to join the chat, I'm happy to help

[govardhangdg]

Thanks @svartalf