added filter options to single matching tab

similarity_page.py

@@ -273,7 +273,7 @@ def show_multi_matching_page():
 
 def show_single_matching_page():
 
-    col1, col2, col3 = st.columns([1, 1, 1])
+    col1, col2 = st.columns([1, 2])
     with col1:
         st.subheader("Select a reference project")
         st.caption("""
@@ -285,7 +285,7 @@ def show_single_matching_page():
                     The filters are applied to find the similar projects and are independend of the selected reference project.
                 """)
 
-    col1, col2, col3 = st.columns([1, 1, 1])
+    col1, col2, col3, col4 = st.columns([8, 1, 8, 8])
     with col1:
 
         search_option = st.selectbox(