Create regulators RunRuleAction class

Create the RunRuleAction class that implements the run_rule action in
the JSON config file.

Signed-off-by: Shawn McCarney <shawnmm@us.ibm.com>
Change-Id: I382d072f6648f7609b0eb2b4e8a51b7fb18d54db
diff --git a/phosphor-regulators/test/meson.build b/phosphor-regulators/test/meson.build
index a246150..7157fd6 100644
--- a/phosphor-regulators/test/meson.build
+++ b/phosphor-regulators/test/meson.build
@@ -11,6 +11,7 @@
 
     'actions/action_environment_tests.cpp',
     'actions/action_utils_tests.cpp',
+    'actions/run_rule_action_tests.cpp',
     'actions/set_device_action_tests.cpp'
 ]