Support Power delay configuration

Add set power delay and get power delay commands.

Tested:
1. set power delay:
```
root@nf5280m7:~# ipmitool raw 0x3c 0x24 0x01 0x00

```
2. get power delay:
```
root@nf5280m7:~# ipmitool raw 0x3c 0x25
 01 00
```

Change-Id: Ibc42aeade2888572d1aae90fb0e4f7e6db3e3250
Signed-off-by: George Liu <liuxiwei@ieisystem.com>
diff --git a/src/meson.build b/src/meson.build
index 260c160..3f64ef2 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -9,6 +9,7 @@
 sources = [
   'asset_info.cpp',
   'firmware_version.cpp',
+  'power.cpp',
   'utils.cpp',
 ]