chore: Use CMake components for install

[legleux]

High Level Overview of Change

This PR groups xrpl artifacts in different installation groups based on use.

1. Runtime - executables (xrpld, validator-keys)
2. Development - libxrpl.a, headers, etc

The CMake target export configuration has been removed also.

Context of Change

Generation of binary packages and Conan packages requires less customization scripts if the installation structure matches the distribution structure.

Removes flaky symlink creation and "works on my machine" hard-coded paths.

runtime_install
├── bin
│   ├── validator-keys
│   └── xrpld
└── etc
    └── xrpld
        ├── validators.txt
        └── xrpld.cfg

development_install (depth truncated for clarity)
├── include
│   └── xrpl
│       ├── basics
│       ├── beast
│       ├── conditions
│       ├── core
│       ├── crypto
│       ├── json
│       ├── ledger
│       ├── net
│       ├── nodestore
│       ├── proto
│       ├── protocol
│       ├── rdb
│       ├── resource
│       ├── server
│       ├── shamap
│       └── tx
└── lib
    ├── libxrpl.a
    └── libxrpl.libpb.a

Remove unconditional installation of 3rd party SDKs

Don't install antithesis-sdk-cpp just because.

Remove rippled/xrpld symlink logic from install targets

This has been fragile and broken things all over the place over the years.
Let this be part of a "to-be-deprecated" binary packaging convenience and let installs from source do what they desire.

if (is_root_project AND TARGET xrpld)
    install(TARGETS xrpld RUNTIME DESTINATION bin COMPONENT runtime)
    set_target_properties(xrpld PROPERTIES INSTALL_RPATH_USE_LINK_PATH ON)
    # sample configs should not overwrite existing files
    # install if-not-exists workaround as suggested by
    # https://cmake.org/Bug/view.php?id=12646
    install(CODE "
    macro (copy_if_not_exists SRC DEST NEWNAME)
      if (NOT EXISTS \"\$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/\${DEST}/\${NEWNAME}\")
        file (INSTALL FILE_PERMISSIONS OWNER_READ OWNER_WRITE DESTINATION \"\${CMAKE_INSTALL_PREFIX}/\${DEST}\" FILES \"\${SRC}\" RENAME \"\${NEWNAME}\")
      else ()
        message (\"-- Skipping : \$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/\${DEST}/\${NEWNAME}\")
      endif ()
    endmacro()
    copy_if_not_exists(\"${CMAKE_CURRENT_SOURCE_DIR}/cfg/xrpld-example.cfg\" etc xrpld.cfg)
    copy_if_not_exists(\"${CMAKE_CURRENT_SOURCE_DIR}/cfg/validators-example.txt\" etc validators.txt)
  "
  COMPONENT runtime)
    install(CODE "
    set(CMAKE_MODULE_PATH \"${CMAKE_MODULE_PATH}\")
    include(create_symbolic_link)
    create_symbolic_link(xrpld${suffix} \
       \$ENV{DESTDIR}\${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_BINDIR}/rippled${suffix})
  "
  COMPONENT runtime)
endif ()

Type of Change

• Chore (no impact to binary, e.g. .gitignore, formatting, dropping support for older tooling)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 79.8%. Comparing base (f27d8f3) to head (0b5251f).
⚠️ Report is 2 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #6485   +/-   ##
=======================================
  Coverage     79.8%   79.8%           
=======================================
  Files          862     862           
  Lines        67881   67881           
  Branches      7555    7550    -5     
=======================================
+ Hits         54188   54198   +10     
+ Misses       13693   13683   -10     

see 4 files with indirect coverage changes

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[mathbunnyru]

Thanks for merging latest develop, please take a look at comments I left