cfg: tweaks to analog binding UI (#434)

## Link to GitHub Issue, if one exists
n/a

## Description of change
Add the raw device handle string to tooltip.
Add `Reset` button that clears all values.

## Testing
manual testing

src/spice2x/overlay/windows/config.cpp

@@ -1727,6 +1727,13 @@ namespace overlay::windows {
                         std::vector<int> analogs_midi_indices;
                         if (this->analogs_devices_selected >= 0) {
                             auto device = this->analogs_devices.at(this->analogs_devices_selected);
+
+                            // add a tooltip to devices selector
+                            if (!device->name.empty()) {
+                                ImGui::SameLine();
+                                ImGui::HelpMarker(device->name.c_str());
+                            }
+                            
                             switch (device->type) {
                                 case rawinput::MOUSE: {
 
@@ -2036,6 +2043,11 @@ namespace overlay::windows {
                             ImGui::CloseCurrentPopup();
                         }
 
+                        ImGui::SameLine();
+                        if (ImGui::Button("Reset")) {
+                            analog.resetValues();
+                        }
+
                         // clean up
                         ImGui::EndPopup();
                     }