cmake: add and use install_binary_component

Add a separate component for each binary for fine-grained installation options.

Also install the man pages for only for the targets enabled.

cmake/module/InstallBinaryComponent.cmake

@@ -0,0 +1,26 @@
+# Copyright (c) 2025-present The Bitcoin Core developers
+# Distributed under the MIT software license, see the accompanying
+# file COPYING or https://opensource.org/license/mit/.
+
+include_guard(GLOBAL)
+include(GNUInstallDirs)
+
+function(install_binary_component component)
+  cmake_parse_arguments(PARSE_ARGV 1
+    IC                # prefix
+    "HAS_MANPAGE"     # options
+    ""                # one_value_keywords
+    ""                # multi_value_keywords
+  )
+  set(target_name ${component})
+  install(TARGETS ${target_name}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    COMPONENT ${component}
+  )
+  if(INSTALL_MAN AND IC_HAS_MANPAGE)
+    install(FILES ${PROJECT_SOURCE_DIR}/doc/man/${target_name}.1
+      DESTINATION ${CMAKE_INSTALL_MANDIR}/man1
+      COMPONENT ${component}
+    )
+  endif()
+endfunction()