Adding samples files to multi point dist cal

apps/multi_points_distance_calculator.py

@@ -51,6 +51,27 @@ st.write(
                       """
 )
 
+dataset1_sample_file_path = "samples/Dataset1.xlsx"
+dataset2_sample_file_path = "samples/Dataset2.xlsx"
+
+col1, col2, col3 = st.columns(3)
+
+with col1:
+    st.download_button(
+        label="Dataset1 Sample File",
+        data=open(dataset1_sample_file_path, "rb").read(),
+        file_name="Dataset1.xlsx",
+        mime="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+    )
+with col2:
+    st.download_button(
+        label="Dataset2 Sample File",
+        data=open(dataset2_sample_file_path, "rb").read(),
+        file_name="Dataset2.xlsx",
+        mime="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
+    )
+
+
 # Upload Dataset 1
 st.subheader("Upload Dataset 1 (Reference Points)")
 file1 = st.file_uploader("Upload first dataset (Excel)", type=["xlsx"], key="file1")