plugin: vim-airline system status extension

[ratmav]

write a little go binary to get system status using https://github.com/shirou/gopsutil. be sure to VENDOR AND COMMIT your dependencies in case the repo vanishes.

then, use https://github.com/enricobacis/vim-airline-clock as a guide to provide a vim-airline extension. use the file manager in go layout from https://github.com/vim-ctrlspace/vim-ctrlspace to provide pre-built binaries in the plugin. also include the go binary source for easy hacking. might be a good use case for a git submodule.

[ratmav]

would also rule to ouput the current time in UTC like Mon Dec 14 2020 HH:MM CPU - foo MEM - bar TEMP- baz, and refresh that every 5s or whatever interval is fast but not pinging the machine too much (probably somewhere between 5s and 1m).

[ratmav]

got the repo up.