add option to overrides colors based on the sway config

[akrram09]

i found it a hassle to change colors on sway and then found out you need to do the same on i3status-rs it would be amazing if you could add option in override to follow sway bar config part

`bar {
position top
icon_theme "Papirus-Dark"
status_command i3status-rs "/home/akram/.config/i3status-rust/config.toml"

colors {
    statusline $text
    background $border
focused_workspace $border #89b4fa #1e1e2e 
    inactive_workspace $border $border $intext
}

}
`
statusline for text and background for background