Streamlit Selectboxes should use keys instead of panel.set_value()

[mikeprosserni]

What does this Pull Request accomplish?

st.selectbox() should use key= to pass values automatically instead of using panel.set_value().

I've updated nidaqmx_analog_input_filtering example accordingly, and I've added an st.selectbox entry to the all_types example. I also added st.slider, st.progress, st.color_picker, st.multiselect, and st.radio entries to the all_types example, since all of them should also use key= to pass values automatically.

Why should this Pull Request be merged?

We want our examples to demonstrate best practices.

What testing has been done?

[github-actions]

Test Results

   10 files  ±0     10 suites  ±0   22s ⏱️ -1s
  221 tests ±0    221 ✅ ±0  0 💤 ±0  0 ❌ ±0 
2 160 runs  ±0  2 160 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 7c3b550. ± Comparison against base commit 2e9b3ba.

♻️ This comment has been updated with latest results.