docs: Add ATTRIBUTION file

[techoneel]

ATTRIBUTION for external packages used should be updated in all projects.
This information should be updated before every release, if any new external package has been added.
@wrappid/devops-team : The above should be done by automating the process in DevOps.

• Generate and manually add ATTRIBUTION file in core core#76
• Generate and manually add ATTRIBUTION file in native-mobile native-mobile#35
• Generate and manually add ATTRIBUTION file in native-web native-web#25
• Generate and manually add ATTRIBUTION file in styles styles#24
• Generate and manually add ATTRIBUTION file in service-core service-core#30
• Generate and manually add ATTRIBUTION file in wrappid-app wrappid-app#105
• Generate and manually add ATTRIBUTION file in wrappid-service wrappid-service#104
• Generate and manually add ATTRIBUTION file in wrappid-module wrappid-module#31
• Generate and manually add ATTRIBUTION file in toolkit
• Generate and manually add ATTRIBUTION file in whatsapp
• Generate and manually add ATTRIBUTION file in workflow-mgmt
• wrappid/workflow-mgmt#26

[anantakumarghosh]

@techoneel why attribution file is required for workflow-mgmt?

[samhere17]

@techoneel why attribution file is required for workflow-mgmt?

I think we use external libs/packages/actions for workflow as well. Attribution should be generated for any project which uses 3rd party libs/packages/actions.

[anantakumarghosh]

@techoneel why attribution file is required for workflow-mgmt?

I think we use external libs/packages/actions for workflow as well. Attribution should be generated for any project which uses 3rd party libs/packages/actions.

Till date, workflow-mgmt repository doesn't use any packages. It only uses actions. So we will need a way to handle attribution for actions.

[anantakumarghosh]

Please suggest ideas @techoneel @samhere17