Finish first version of WebUI

Close #10

src/webui/serveApiGetTranslations.go

@@ -0,0 +1,32 @@
+package webui
+
+import (
+    _ "embed"
+	"fmt"
+	"net/http"
+)
+
+type tlRaw struct {
+    webdav_uploader map[string]string `json:"webdav_uploader"`
+}
+
+//go:embed translation-json/webdav-uploader/de/webdav_uploader.json
+var rawTlsDe string
+//go:embed translation-json/webdav-uploader/en/webdav_uploader.json
+var rawTlsEn string
+
+// Retrieves translation variables in the given language.
+func serveApiGetTranslations(w http.ResponseWriter, r *http.Request) {
+
+    var rawTls string
+    if r.URL.Query().Get("lang") == "de" {
+        rawTls = rawTlsDe
+    } else {
+        rawTls = rawTlsEn
+    }
+
+	setHeadersForJson(w)
+
+	fmt.Fprint(w, rawTls)
+
+}