Change layout to more go-style-ish, replace some modules

* Deejay files, split them to achieve go-style project layout
* Replace logrus with log/slog module to reduce dependencies
* Replace gopkg.in/ini.v1 with github.com/wlevene/ini to make sure all modules BSD licensed
* Update linter config && fix tons of linter warnings
* Update .gitignore
* Update README.md

vendor/golang.org/x/sys/unix/ifreq_linux.go

@@ -111,9 +111,7 @@ func (ifr *Ifreq) SetUint32(v uint32) {
 // clear zeroes the ifreq's union field to prevent trailing garbage data from
 // being sent to the kernel if an ifreq is reused.
 func (ifr *Ifreq) clear() {
-	for i := range ifr.raw.Ifru {
-		ifr.raw.Ifru[i] = 0
-	}
+	clear(ifr.raw.Ifru[:])
 }
 
 // TODO(mdlayher): export as IfreqData? For now we can provide helpers such as