Add system/memory/* projects into manifest

Add the following projects into manifest:
  platform/system/memory/libion
  platform/system/memory/libmeminfo
  platform/system/memory/libmemtrack
  platform/system/memory/libmemunreachable
  platform/system/memory/lmkd

These projects used to be a part of system/core and are being separated
into separate projects.

Bug: 141634854
Test: build
Change-Id: I466c42fba67d9cd705d836c87809d99bdd989b79
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Merged-In: Iffc1a8780dcdfd7dccb28b802efa78ea0c4d2b39
Merged-In: I1751caf8aef09658aabb77c1f3f47d91812c9443

default.xml

@@ -746,6 +746,11 @@
   <project path="system/libvintf" name="platform/system/libvintf" groups="pdk" />
   <project path="system/linkerconfig" name="platform/system/linkerconfig" groups="pdk" />
   <project path="system/media" name="platform/system/media" groups="pdk" />
+  <project path="system/memory/libion" name="platform/system/memory/libion" groups="pdk" />
+  <project path="system/memory/libmeminfo" name="platform/system/memory/libmeminfo" groups="pdk" />
+  <project path="system/memory/libmemtrack" name="platform/system/memory/libmemtrack" groups="pdk" />
+  <project path="system/memory/libmemunreachable" name="platform/system/memory/libmemunreachable" groups="pdk" />
+  <project path="system/memory/lmkd" name="platform/system/memory/lmkd" groups="pdk" />
   <project path="system/netd" name="platform/system/netd" groups="pdk" />
   <project path="system/nfc" name="platform/system/nfc" groups="pdk" />
   <project path="system/nvram" name="platform/system/nvram" groups="pdk" />