[MS-335] Bookmark - Githubissues

Description

Added the bookmark feature for the API and CLI. With this feature, users can bookmark prompts and use them later in a red teaming session.

This PR will have changes to add a new placeholder and changes to deleting database records

Motivation and Context

To allow users to bookmark prompts which they think are important

Type of Change

How to Test

[Provide clear instructions on how to test and verify the changes introduced by this pull request, including any specific unit tests you have created to demonstrate your changes.]

Checklist

Please check all the boxes that apply to this pull request using "x":

[x] I have tested the changes locally and verified that they work as expected.
[ ] I have added or updated the necessary documentation (README, API docs, etc.).
[ ] I have added appropriate unit tests or functional tests for the changes made.
[x] I have followed the project's coding conventions and style guidelines.
[ ] I have rebased my branch onto the latest commit of the main branch.
[ ] I have squashed or reorganized my commits into logical units.
[ ] I have added any necessary dependencies or packages to the project's build configuration.
[x] I have performed a self-review of my own code.
[x] I have read, understood and agree to the Developer Certificate of Origin below, which this project utilises.

Screenshots (if applicable)

[If the changes involve visual modifications, include screenshots or GIFs that demonstrate the changes.]

Additional Notes

[Add any additional information or context that might be relevant to reviewers.]

Developer Certificate of Origin

``` Developer Certificate of Origin Version 1.1 Copyright (C) 2004, 2006 The Linux Foundation and its contributors. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Developer's Certificate of Origin 1.1 By making a contribution to this project, I certify that: (a) The contribution was created in whole or in part by me and I have the right to submit it under the open source license indicated in the file; or (b) The contribution is based upon previous work that, to the best of my knowledge, is covered under an appropriate open source license and I have the right under that license to submit that work with modifications, whether created in whole or in part by me, under the same open source license (unless I am permitted to submit under a different license), as indicated in the file; or (c) The contribution was provided directly to me by some other person who certified (a), (b) or (c) and I have not modified it. (d) I understand and agree that this project and the contribution are public and that a record of the contribution (including all personal information I submit with it, including my sign-off) is maintained indefinitely and may be redistributed consistent with this project or the open source license(s) involved. ```

aiverify-foundation / moonshot-data

[MS-335] Bookmark #67