* Added endpoint for fetching all notebook jobs
* Refractored NotebookJobInfo to AgentNotebookInfo to make it more consistent with the rest of the codebase
* Added Notebook History endpoint in contracts.
* Added Create, Update, Delete notebook endpoints. Also added separate fetch template, materialized notebook endpoints. This will make the Notebook Request and Notebook History responses lighter.
* AgentNotebookInfo is now derived from AgentJobInfo
* added fetch noteook history endpoint
* Added fetching materialized notebook endpoint
* Added code for cleaning up the directory
* Added create notebook api
* Added Update and delete notebook job
* Fixed notebook history API
* Added last run info to the script and template folder
* Added execute database feature for notebook Jobs
* SQL commands are now using sqlparameters to prevent
any injection attacks
* Changed rundate and runtime to string to preserve
leading zeros
* integration test for agentnotebooks api
* Made some changes mentioned in PR
* Refactored the code, removed enpoint logic from the notebook handler and
wrote test cases
* changes select statements, fixed a bug in the test job cleanup
and fixed other stuff mentioned in the PR.
* added notebook_error column in notebook history select statement
* Added get template notebook endpoint
