Update umfOpenIPCHandle API to use IPC handler instead of pool

[vinser52]

Description

As we agreed on the UMF technical meeting, this PR introduces umf_ipc_handler_handle_t that is used by the umfOpenIPCHandle function instead of pool handle to open the IPC handle. In current implementation the umf_ipc_handler_handle_t is just a memory provider handle to the tracking provider instance.

Checklist

• Code compiles without errors locally
• All tests pass locally
• CI workflows execute properly

[bratpiorka]

should this be ready for review?

[vinser52]

should this be ready for review?

The code part is ready, but I also want to update the examples.rst file in this PR.

[vinser52]

The umfPoolByPtr implementation will be updated in a separate PR.

[lplewa]

Do we need it on 0.10 branch?
If yes please change target branch on this PR and then rebase to 0.10 branch(in this order)

[vinser52]

Do we need it on 0.10 branch?
If yes please change target branch on this PR and then rebase to 0.10 branch(in this order)

Yes, we need. I will rebase.

How do the changes then go to the main branch? Will they be merged automatically or do I need separate PR?

[lplewa]

we do PR from 0.10 to main. Like this one:#959

[vinser52]

we do PR from 0.10 to main. Like this one:#959

Who will do that? Should I do that, or someone from your team do it from time to time?

[lukaszstolarczuk]

we do PR from 0.10 to main. Like this one:#959

Who will do that? Should I do that, or someone from your team do it from time to time?

Yeah, I do it from time to time, or when need to include a specific patch to the main