regulators: Create regulators PMBusReadSensorAction class

Create the PMBusReadSensorAction class that implements the
"pmbus_read_sensor" action in the JSON config file.

Only create the .hpp file for PMBusReadSensorAction class first.

Signed-off-by: Bob King <Bob_King@wistron.com>
Change-Id: I689ad9dbefe601d8962c694e7e1b8b7275ba6880
diff --git a/phosphor-regulators/test/meson.build b/phosphor-regulators/test/meson.build
index a9ac996..b73c3a0 100644
--- a/phosphor-regulators/test/meson.build
+++ b/phosphor-regulators/test/meson.build
@@ -37,6 +37,7 @@
     'actions/if_action_tests.cpp',
     'actions/not_action_tests.cpp',
     'actions/or_action_tests.cpp',
+    'actions/pmbus_read_sensor_action_tests.cpp',
     'actions/pmbus_write_vout_command_action_tests.cpp',
     'actions/run_rule_action_tests.cpp',
     'actions/set_device_action_tests.cpp'