Add paging support for C++ metrics

[barnabasdomozi]

This PR implements paged versions of existing functions in CppMetricsService:

• getPagedCppAstNodeMetricsForPath
• getPagedCppAstNodeMetricsDetailedForPath
• getPagedCppFileMetricsForPath

I also upgraded the C++ standard to 17, since I used if constexpr in a function template.

The Thrift CppMetricsService was missing JavaScript bindings, I think this is a mistake so I added that as well to plugins/metrics/service/CMakeLists.txt.

On a high level, the paging is implemented as follows:

1. We select DISTINCT astNodeId from table CppAstNodeMetrics.
2. We filter for path (using LIKE) and also for pageSize and pageNumber (using LIMIT and OFFSET).
3. Finally, we have a list of astNodeId with exact size as pageSize. We run SELECT on CppAstNodeMetrics once again, selecting all rows where the astNodeId is in the list (using SQL IN keyword).

The PR was also tested using Thrift JS bindings.

[mcserep]

Nice approach on avoiding code redundancy in the service implementation! 👏

The Thrift CppMetricsService was missing JavaScript bindings, I think this is a mistake so I added that as well to plugins/metrics/service/CMakeLists.txt.

I think it was simply missing, because the frontend does not support metrics yet. It can be added though.

[mcserep]

@wbqpk3 The CI fails to build on Ubuntu 20.04. While we should drop support for Ubuntu 20.04 soon, now it should be checked why the build fails there, otherwise the Docker images won't be build too in the pipeline.

[barnabasdomozi]

@mcserep

Looking at the build logs, it seems the error is caused by the switch to the C++ 17 standard.
On Ubuntu 20.04, we install ODB from package repositories resulting in an older ODB version which has issues with C++ 17 changes.
In 77566fe I attempted to fix this issue by compiling ODB from source.

[barnabasdomozi]

I just also noticed a warning message that Ubuntu 20.04 runner images on GitHub will no longer be supported after 2025-04-15.
actions/runner-images#11101

[mcserep]

I just also noticed a warning message that Ubuntu 20.04 runner images on GitHub will no longer be supported after 2025-04-15. actions/runner-images#11101

Yes, and while it is not April 15th yet, CI jobs for Ubuntu 20.04 already started to skip, due to image unavailability. I have disabled the CI build for Ubuntu 20.04 in b9e6733, and added an issue #789 to deprecate it completely.

Looking at the build logs, it seems the error is caused by the switch to the C++ 17 standard.
On Ubuntu 20.04, we install ODB from package repositories resulting in an older ODB version which has issues with C++ 17 changes.
In 77566fe I attempted to fix this issue by compiling ODB from source.

Thanks for attempting to resolve it, but in this case it is not necessary anymore and simply reverting 77566fe would be better.

[barnabasdomozi]

@mcserep Removed the Ubuntu 20.04 CI commit and rebased to master.