i3c: add i3c shell

Add an I3C shell. This includes support of all I3C CCC commands that
currently have helper functions implemented. This also includes all
the read/write shell commands that the i2c shell supported. An Info
command is also provided which will print out all i3c and i2c info
of an i3c bus. Only SDR read/writes are currently implemented.

Signed-off-by: Ryan McClelland <ryanmcclelland@meta.com>

drivers/i3c/CMakeLists.txt

@@ -16,6 +16,11 @@ zephyr_library_sources_ifdef(
   i3c_handlers.c
 )
 
+zephyr_library_sources_ifdef(
+  CONFIG_I3C_SHELL
+  i3c_shell.c
+)
+
 zephyr_library_sources_ifdef(
   CONFIG_I3C_IBI_WORKQUEUE
   i3c_ibi_workq.c

drivers/i3c/Kconfig

@@ -15,6 +15,15 @@ module = I3C
 module-str = i3c
 source "subsys/logging/Kconfig.template.log_config"
 
+config I3C_SHELL
+	bool "I3C Shell"
+	depends on SHELL
+	help
+	  Enable I3C Shell.
+
+	  The I3C shell supports info, bus recovery, CCC, I3C read and
+	  write operations.
+
 config I3C_USE_GROUP_ADDR
 	bool "Use Group Addresses"
 	default y