[rocprofiler-systems]: Add documentation for communication API tracing (#2478)

Add documentation for communication runtime tracing for MPI, UCX, RCCL.

---------

Co-authored-by: David Galiffi <David.Galiffi@amd.com>

projects/rocprofiler-systems/docs/install/install.rst

@@ -141,6 +141,11 @@ Optional third-party packages
     (By default, if ROCm Systems Profiler cannot find an OpenMPI MPI distribution, it uses a local copy
     of the OpenMPI ``mpi.h``.)
 
+* UCX
+
+  * ``ROCPROFSYS_USE_UCX`` enables UCX (Unified Communication X) support for tracing UCX communication functions
+    used as a transport layer for MPI and other communication libraries
+
 .. csv-table::
    :header: "Third-Party Library", "CMake Enable Option"
    :widths: 15, 45
@@ -149,6 +154,7 @@ Optional third-party packages
    "PAPI", "``ROCPROFSYS_USE_PAPI`` (default: ON)"
    "MPI", "``ROCPROFSYS_USE_MPI`` (default: OFF)"
    "MPI (header-only)", "``ROCPROFSYS_USE_MPI_HEADERS`` (default: ON)"
+   "UCX", "``ROCPROFSYS_USE_UCX`` (default: ON)"
 
 Installing Dyninst
 -----------------------------------
@@ -290,6 +296,20 @@ ROCm Systems Profiler on an application built against OpenMPI causes a segmentat
 This happens because the value of the ``MPI_COMM_WORLD`` is truncated
 during the function wrapping before being passed along to the underlying MPI function.
 
+UCX support within ROCm Systems Profiler
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+ROCm Systems Profiler supports tracing UCX (Unified Communication X) communication functions
+when ``ROCPROFSYS_USE_UCX`` is enabled (default: ON). UCX is a high-performance communication
+framework that serves as a transport layer for MPI and other communication libraries, providing
+optimized point-to-point and collective communication operations.
+
+When UCX support is enabled, ROCm Systems Profiler can automatically intercept and trace UCX
+communication functions such as ``ucp_tag_send``, ``ucp_tag_recv``, and other UCP (Unified
+Communication Protocol) and UCT (Unified Communication Transport) layer operations. This allows
+for detailed analysis of communication patterns and performance in applications using UCX as
+their underlying transport mechanism.
+
 Python support within ROCm Systems Profiler
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^