feat(UI): sticky schema names in explore bar

src/renderer/components/WorkspaceExploreBarDatabase.vue

@@ -256,6 +256,13 @@ export default {
 
 <style lang="scss">
 .workspace-explorebar-database {
+   .database-name{
+      position: sticky;
+      top: 0;
+      background: $bg-color-gray;
+      z-index: 2;
+   }
+
   .database-name,
   .misc-name,
   a.table-name {
@@ -299,7 +306,7 @@ export default {
   .misc-name {
     &:hover {
       color: $body-font-color;
-      background: rgba($color: #fff, $alpha: 0.05);
+      background: $bg-color-light;
       border-radius: 2px;
     }
   }

src/renderer/components/WorkspaceTableTab.vue

@@ -36,6 +36,7 @@
                <button
                   v-if="isTable"
                   class="btn btn-dark btn-sm"
+                  :disabled="isQuering"
                   @click="showFakerModal"
                >
                   <span>{{ $t('message.tableFiller') }}</span>
@@ -243,6 +244,7 @@ export default {
          this.isAddModal = false;
       },
       showFakerModal () {
+         if (this.isQuering) return;
          this.isFakerModal = true;
       },
       hideFakerModal () {