Adopt stateforward::sml as the public include surface

[gabewillen]

Summary

• add include/stateforward/... wrapper headers that expose stateforward::sml while keeping the existing boost::sml implementation intact
• update install/package metadata and fork-facing docs to use the new stateforward entry point
• migrate shipped examples to #include <stateforward/sml.hpp> and stateforward::sml

Verification

• cmake -S . -B build-stateforward -DSML_BUILD_EXAMPLES=ON
• cmake --build build-stateforward --target hello_world dispatch_table visitor actions_guards -- -j4

[Copilot]

Pull request overview

This PR introduces stateforward::sml as the fork’s primary public include/namespace surface by adding include/stateforward/... wrapper headers while retaining the existing boost::sml implementation and updating installation metadata and shipped examples accordingly.

Changes:

• Added include/stateforward/sml.hpp and wrapper utility headers under include/stateforward/sml/utility/.
• Updated installation/packaging metadata (CMake install + Conan metadata) and top-level docs to point to the stateforward entry point.
• Migrated shipped examples from <boost/sml.hpp> / boost::sml to <stateforward/sml.hpp> / stateforward::sml.

Reviewed changes

Copilot reviewed 35 out of 35 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
zephyr/README.md	Updates Zephyr module docs to include stateforward/sml.hpp.
zephyr/Kconfig	Updates Kconfig prompt/help text to refer to stateforward::sml.
README.md	Updates fork-facing README include paths and namespace alias to stateforward::sml, including utility header paths.
include/stateforward/sml.hpp	Adds the primary wrapper header mapping stateforward::sml to boost::sml.
include/stateforward/sml/utility/sm_pool.hpp	Adds wrapper include for sm_pool under the stateforward path.
include/stateforward/sml/utility/dispatch_table.hpp	Adds wrapper include for dispatch_table under the stateforward path.
include/stateforward/sml/utility/co_sm.hpp	Adds wrapper include for co_sm under the stateforward path.
include/boost/sml.hpp	Updates one static_assert message to reference stateforward::sml types.
example/visitor.cpp	Migrates example to stateforward include/namespace and updates internal qualified names.
example/transitions.cpp	Migrates example to stateforward include/namespace.
example/testing.cpp	Migrates example to stateforward include/namespace.
example/states.cpp	Migrates example to stateforward include/namespace.
example/sdl2.cpp	Migrates example to stateforward include/namespace and wrapper utility include.
example/plant_uml.cpp	Migrates example to stateforward include/namespace and updates qualified type-name calls.
example/orthogonal_regions.cpp	Migrates example to stateforward include/namespace.
example/nested.cpp	Migrates example to stateforward include/namespace.
example/logging.cpp	Migrates example to stateforward include/namespace.
example/in_place.cpp	Migrates example to stateforward namespace alias in deduction-guides branch.
example/history.cpp	Migrates example to stateforward include/namespace.
example/hello_world.cpp	Migrates example to stateforward include/namespace.
example/events.cpp	Migrates example to stateforward include/namespace.
example/eval.cpp	Migrates example to stateforward include/namespace.
example/euml_emulation.cpp	Migrates example to stateforward include/namespace.
example/error_handling.cpp	Migrates example to stateforward include/namespace.
example/dispatch_table.cpp	Migrates example to stateforward wrapper utility include and namespace.
example/dispatch_policy.cpp	Migrates example to stateforward include/namespace.
example/dependency_injection.cpp	Migrates example to stateforward include/namespace.
example/dependencies.cpp	Migrates example to stateforward include/namespace.
example/defer_and_process.cpp	Migrates example to stateforward include/namespace.
example/data.cpp	Migrates example to stateforward include/namespace and using namespace usage.
example/composite.cpp	Migrates example to stateforward include/namespace.
example/arduino.cpp	Migrates example to stateforward include/namespace and updates fully-qualified SML usages.
example/actions_guards.cpp	Migrates example to stateforward include/namespace.
conanfile.py	Updates Conan metadata (URL/description) for the stateforward fork branding.
CMakeLists.txt	Installs the new include/stateforward headers alongside include/boost.

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