refactors psscanner

internal/psscanner/psscanner.go

@@ -0,0 +1,21 @@
+package psscanner
+
+type PSScanner struct{}
+
+func NewPSScanner() *PSScanner {
+	return &PSScanner{}
+}
+
+func (p *PSScanner) Run(triggerCh chan struct{}) (chan string, chan error) {
+	eventCh := make(chan string, 100)
+	errCh := make(chan error)
+	pl := make(procList)
+
+	go func() {
+		for {
+			<-triggerCh
+			pl.refresh(eventCh)
+		}
+	}()
+	return eventCh, errCh
+}