fix: Connection lost errors on macos

[vrajat]

Postgres connections are dropped when database is running in the host machine.
This solution adds a parameter to SQLAlchemy to ping the database and reconnect if it is dropped.
This is pessimistic and may add latency. However it is the easiest solution.

Refer:

• https://stackoverflow.com/questions/55457069/how-to-fix-operationalerror-psycopg2-operationalerror-server-closed-the-conn
• https://docs.sqlalchemy.org/en/14/core/pooling.html#disconnect-handling-pessimistic

[codecov]

Codecov Report

Merging #64 (066446b) into master (1091e61) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #64   +/-   ##
=======================================
  Coverage   82.35%   82.35%           
=======================================
  Files           8        8           
  Lines        1054     1054           
  Branches      103      103           
=======================================
  Hits          868      868           
- Misses        155      156    +1     
+ Partials       31       30    -1     

Impacted Files	Coverage Δ
data_lineage/server.py	66.25% <ø> (ø)

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