Logging in webUI, Archive view refactor (#127)

* test logging

* test impl for logging

* implemented "live logging", restyle templates dropdown

* moved extract audio to downloadDialog, fixed labels

* code refactoring

* buffering logs

server/logging/observable_logger.go

@@ -0,0 +1,29 @@
+package logging
+
+import (
+	"time"
+
+	"github.com/reactivex/rxgo/v2"
+)
+
+var (
+	logsChan       = make(chan rxgo.Item, 100)
+	logsObservable = rxgo.
+			FromChannel(logsChan, rxgo.WithBackPressureStrategy(rxgo.Drop)).
+			BufferWithTime(rxgo.WithDuration(time.Millisecond * 500))
+)
+
+type ObservableLogger struct{}
+
+func NewObservableLogger() *ObservableLogger {
+	return &ObservableLogger{}
+}
+
+func (o *ObservableLogger) Write(p []byte) (n int, err error) {
+	logsChan <- rxgo.Of(string(p))
+
+	n = len(p)
+	err = nil
+
+	return
+}