feat: Initialize PDF upload functionality with Gradio interface

_app.py

@@ -0,0 +1,9 @@
+import gradio as gr
+from gradio_pdf import PDF
+
+with gr.Blocks() as demo:
+    pdf = PDF(label="Upload a PDF", interactive=True)
+    name = gr.Textbox()
+    pdf.upload(lambda f: f, pdf, name)
+
+demo.launch()