cmake: fix warnings, code cleanup

Use inttypes.h macros for printing/logging (u)int32_t data

license: update text

mesh: streamline mesh-access-parser uint getter names

mesh: remove num_segments and segmented flag from access message builder

mesh: use single access builder

mesh: use mesh_upper_transport_pdu_t for all access messages, remove mesh_transport_pdu_t

mesh: generic on/off + level server - move transition logic to mesh_access

mesh: drop reason from mesh_server_transition_setup_transition_or_instantaneous_update

mesh: introduce mesh_server_transition_handler in generic servers

mesh: extract mesh_server_transition_state_set for generic on/off and levelservers

mesh: setup stepwise transition for generic server delta set

mesh: drop transition speed from int16 transition

mesh: remove delta_from_initial_value from int16 transition

mesh: order generic level delta set cases

mesh: support generic level server move set message

mesh: generic level server - use 32-bit delta value, handle re-transmission of set delta

mesh: reset delay time when transition starts

mesh: generic level server rework transition state machine

mesh: add generic level server to test/mesh, use bstack_assert, fix time calculation

mesh: fix transition setup in generic on/off and generic level server

mesh: fix BTSTACK_FILE__ tags

mesh: fix model callback registration

mesh: use mesh_access_send_unacknowledged_pdu instead of mesh_upper_transport_send_access_pdu

mesh: move mesh files to src/mesh, update includes