normalize time logs from WARP

[psifertex]

I'm doing some perf testing and it would be great if we could normalize these to also use " seconds " instead of appending "s" the way the output current does. It brings them in line with the other time stamps we use.

[WARP.Plugin] Loading files took 6.329744375s

->

[WARP.Plugin] Loading files took 6.329744375 seconds

https://github.com/Vector35/binaryninja-api/blob/dev/plugins/warp/src/plugin.rs#L46
https://github.com/Vector35/binaryninja-api/blob/dev/plugins/warp/src/plugin.rs#L109