New context with albums and lyrics +++ much more

* Added new lyrics provider with lyrics from AudD and API Seeds
* New improved context widget with albums and lyrics
* Fixed playing and context widget getting stuck in play mode when there was an error
* Changed icons for artists in collection, tidal and cover manager
* Removed "search" icon from "Search automatically" checkbox (right click) that looked ugly
* Removed some unused widgets from the src/widgets directory
* Fixed initial size of window and side panel
* Fixed saving window size correctly

data/style/strawberry.css

@@ -0,0 +1,71 @@
+#playlist {
+  background-color: %palette-base;
+  alternate-background-color: %palette-alternate-base;
+
+}
+
+#playlist[default_background_enabled = "true"] {
+  background-image: url(:pictures/strawbs-transparent.png);
+  background-attachment: fixed;
+  background-position: bottom right;
+  background-repeat: none;
+  background-clip: content;
+}
+
+QToolButton {
+  border: 2px solid transparent;
+  border-radius: 3px;
+  padding: 1px;
+}
+
+QToolButton::menu-button {
+  width: 16px;
+  border: none;
+}
+
+QToolButton[popupMode="1"] {
+  padding-right: 16px;
+}
+
+QToolButton:hover {
+  border: 2px solid %palette-highlight;
+  background-color: %palette-highlight-lighter;
+}
+
+QToolButton:hover[popupMode="1"] {
+  padding-right: 16px;
+}
+
+QToolButton:pressed {
+  border: 2px solid %palette-highlight-darker;
+  background-color: %palette-highlight-lighter;
+}
+
+QToolButton:pressed[popupMode="1"] {
+  padding-right: 16px;
+}
+
+darwin {
+  font-size: 11pt;
+}
+
+darwin QMenu {
+  font-size: 13pt;
+}
+
+#scrollarea_play {
+  background-color: white;
+  font: 11pt;
+}
+
+#scrollarea_stop {
+  background-color: white;
+  font: 11pt;
+}
+
+#scrollAreaWidgetContents_stop {
+  background-color: white;
+}
+#scrollAreaWidgetContents_play {
+  background-color: white;
+}