fix: renamed TabsContent -> TabContent & fix types

Author: k4m1

packages/svelte-materialify/@types/TabContent.d.ts

@@ -0,0 +1,11 @@
+import { SvelteComponent } from './shared';
+
+export interface TabContentProps {
+    class?: string;
+    style?: string;
+}
+
+
+declare class TabContent extends SvelteComponent<TabContentProps> { }
+
+export default TabContent;

packages/svelte-materialify/@types/TabsContent.d.ts

@@ -44,7 +44,7 @@ export { default as Subheader } from './Subheader';
 export { default as Switch } from './Switch';
 export { default as Tab } from './Tab';
 export { default as Tabs } from './Tabs';
-export { default as TabsContent } from './TabsContent';
+export { default as TabContent } from './TabContent';
 export { default as Textarea } from './Textarea';
 export { default as TextField } from './TextField';
 export { default as Tooltip } from './Tooltip';

packages/svelte-materialify/@types/index.d.ts

@@ -3,7 +3,7 @@
 
   let klass = '';
   export { klass as class };
-  export let style = null;
+  export let style = "";
 </script>
 
 <div class="s-tab-content {klass}" role="tabpanel" {style}>