feat: create sequence backend

[asthamohta]

No description provided.

[manitgupta]

Excellent PR! Love the rigor you've put in in the UTs 👍✌🏻

I don't have any major concerns, except -

Please validate backward compatibility of the session file. Can you find a way to write a test which uses an older version of the session file and the newer version (which contains sequences now) and ensure that both can be parsed and both work?

We should have a method which loads the session file which you can use to write this type of test.

[Deep1998]

Excellent PR! Love the rigor you've put in in the UTs 👍✌🏻

I don't have any major concerns, except -

Please validate backward compatibility of the session file. Can you find a way to write a test which uses an older version of the session file and the newer version (which contains sequences now) and ensure that both can be parsed and both work?

We should have a method which loads the session file which you can use to write this type of test.

Agreed, we shuold be able to add an IT here using the Spanner emulator similar to our existing ones.

[asthamohta]

@Deep1998 and @manitgupta, added unit tests reading session file into conv(new and old) to ensure an older version is also correctly read. Please check. Thanks