Add D-Bus interface for a logical volume

Add an initial D-Bus interface for a logical volume, which will be used
for eStoraged. It includes the following methods: FormatLuks, Lock,
Unlock, and ChangePassword.

The design doc for eStoraged can be found here:
https://github.com/openbmc/docs/blob/master/designs/estoraged.md

Signed-off-by: John Wedig <johnwedig@google.com>
Signed-off-by: John Edward Broadbent <jebr@google.com>
Change-Id: I7975056e52901a82b36933b51fb3eea112818385
diff --git a/gen/xyz/openbmc_project/Inventory/Item/Volume/meson.build b/gen/xyz/openbmc_project/Inventory/Item/Volume/meson.build
new file mode 100644
index 0000000..d78cbd7
--- /dev/null
+++ b/gen/xyz/openbmc_project/Inventory/Item/Volume/meson.build
@@ -0,0 +1,14 @@
+# Generated file; do not modify.
+generated_sources += custom_target(
+    'xyz/openbmc_project/Inventory/Item/Volume__cpp'.underscorify(),
+    input: [ '../../../../../../yaml/xyz/openbmc_project/Inventory/Item/Volume.interface.yaml',  ],
+    output: [ 'server.cpp', 'server.hpp', 'client.hpp',  ],
+    command: [
+        sdbuspp_gen_meson_prog, '--command', 'cpp',
+        '--output', meson.current_build_dir(),
+        '--tool', sdbusplusplus_prog,
+        '--directory', meson.current_source_dir() / '../../../../../../yaml',
+        'xyz/openbmc_project/Inventory/Item/Volume',
+    ],
+)
+