chassis-power: Create initial application
Create the new chassis power monitor application and a service file that
would start it. Make the new application available via a meson option.
Tested: Verified the service and application start with no errors.
```
root@p10bmc:~# systemctl status phosphor-chassis-power.service
● phosphor-chassis-power.service - Chassis Power Monitor
Loaded: loaded
(/usr/lib/systemd/system/phosphor-chassis-power.service; enabled;
preset: enabled)
Active: active (running) since Mon 2025-11-10 19:08:09 UTC; 4min 28s ago
Invocation: 6f0cac0ee4e04066b68ba448aa2d7ccc
Main PID: 549 (phosphor-chassi)
CPU: 29ms
CGroup: /system.slice/phosphor-chassis-power.service
└─549 /usr/libexec/phosphor-power/phosphor-chassis-power
Nov 10 19:08:09 p10bmc systemd[1]: Started Chassis Power Monitor.
root@p10bmc:~# ps |grep chassis
549 root 14928 S /usr/libexec/phosphor-power/phosphor-chassis-power
```
Change-Id: Ia0ab5bc6c578b8203f09feec9b6927059db0f883
Signed-off-by: Adriana Kobylak <anoo@us.ibm.com>
diff --git a/phosphor-chassis-power/meson.build b/phosphor-chassis-power/meson.build
new file mode 100644
index 0000000..9537275
--- /dev/null
+++ b/phosphor-chassis-power/meson.build
@@ -0,0 +1 @@
+subdir('src')