feat: auto clean inactive sessions for a long time.

[assertion]

There's no session clean strategy now, if frontend just be offline/close browser, the session in backend server will always be there. This pr will auto close the inactive sessions for 600s, and every 300s an inactive session check will be triggered.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 16 lines in your changes are missing coverage. Please review.

:exclamation: No coverage uploaded for pull request base (main@f8d4b1a). Click here to learn what that means.

Files	Patch %	Lines
opendevin/server/session/manager.py	0.00%	16 Missing :warning:

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Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1644   +/-   ##
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  Coverage        ?   62.54%           
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  Files           ?       96           
  Lines           ?     3855           
  Branches        ?        0           
=======================================
  Hits            ?     2411           
  Misses          ?     1444           
  Partials        ?        0           

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