### _Why are the changes needed?_
Add a docs for session conf advisor which includes:
1. the step of how to use
2. an example
### _How was this patch tested?_

Closes#3175 from ulysses-you/session-advisor.
Closes#3175
0743644a [ulysses-you] address comment
43f2cda3 [ulysses-you] Add session conf advisor docs
Authored-by: ulysses-you <ulyssesyou18@gmail.com>
Signed-off-by: ulysses-you <ulyssesyou@apache.org>