kamctl: added mtrees tables for dbtext and berkeley db

utils/kamctl/db_berkeley/kamailio/mtrees

@@ -0,0 +1,12 @@
+METADATA_COLUMNS
+id(int) tname(str) tprefix(str) tvalue(str)
+METADATA_KEY
+
+METADATA_READONLY
+0
+METADATA_LOGFLAGS
+0
+METADATA_DEFAULTS
+NIL|''|''|''
+mtrees|
+mtrees|1

utils/kamctl/dbtext/kamailio/mtrees

@@ -0,0 +1,2 @@
+id(int,auto) tname(string) tprefix(string) tvalue(string) 
+mtrees:1