feat: add shared runtime config to QueryPlan

[wcarlson5]

Make it so the config value for shared runtimes are enabled is written into the cmd topic so it is specific to when each query was launched

Reviewer checklist

• Ensure docs are updated if necessary. (eg. if a user visible feature is being added or changed).
• Ensure relevant issues are linked (description should include text like "Fixes #")

[guozhangwang]

Overall LGTM. Could we add a test covering the case e.g. even with the global config set to true, if a specific query has it false, or does not set it (since it's written from an older version) in the query plan, that specific query would not be assigned to the shared runtime still.

[wcarlson5]

@guozhangwang good idea. I added a test that should verify that global config is only used when creating the query plan. I also made it so that for any query plans that get serialized with out it set will default to false. Eventually when we remove the FF we will remove it from the query plan as well

[guozhangwang]

Thanks for converting the field to a string as well. I do not have further comments. cc @rodesai .

[ableegoldman]

Makes sense to me, but @rodesai should probably give it a quick final pass since I'm still just a ksql noob 🙂