@Sanjay_Ramaling
I would suggest the following approach:
1. Establish, agree and document which are your "main" solutions
2. Install 'Power DevOps Tools' extension into your Azure DevOps extension from here: https://marketplace.visualstudio.com/items?itemName=WaelHamze.xrm-ci-framework-build-tasks. You will need admin privileges for this
3. Create a pipeline in Azure DevOps that will be manually triggered and have 2 input parameters to be set manually: first is the unique name of the source solution, and the second is the unique name of the target solution. If you're intended for only 1 main solution, then the target parameter can be omitted from manual setting and can be set using environment variables/hard-coded instead.
4. The pipeline will 2 tasks: first the 'Power DevOps Tools Installer' and then the 'Copy Solution Components' task to copy components from the source solution to the target solution
5. Optionally you can have a third task to delete the source solution
6. Ideally at the end of this you would want additional tasks to:
a) Increment the solution version number
b) Publish all customisations
c) Export the unmanaged and managed solutions, unpack them and commit them to source control
You will need ensure there is good communication between team members to ensure that no component is included in more than one developer solution and no changes are made directly in the main solutions