implement recreate, reload and status, and stop advertising -H

The usage listed recreate but the dispatcher did not know it: myos recreate
exited 2 saying the command was unknown. status was missing too, and -H was
parsed into a variable nothing ever reads, so it was accepted and ignored. It
now refuses rather than pretending.

lib/cmd/recreate.sh

@@ -0,0 +1,10 @@
+#shellcheck shell=sh
+# myos recreate  remove the containers and create them again
+# myos reload    the same, under the name the make engine used
+myos_cmd_recreate() {
+  # shellcheck source=lib/cmd/_compose.sh
+  . "$MYOS_ROOT/lib/cmd/_compose.sh"
+  MYOS_ARGS="--force-recreate ${MYOS_ARGS:-}"
+  myos_cmd_compose up
+}
+myos_cmd_reload() { myos_cmd_recreate; }

lib/cmd/reload.sh

@@ -0,0 +1,4 @@
+#shellcheck shell=sh
+# myos reload: see lib/cmd/recreate.sh
+# shellcheck source=lib/cmd/recreate.sh
+. "$MYOS_ROOT/lib/cmd/recreate.sh"

lib/cmd/status.sh

@@ -0,0 +1,7 @@
+#shellcheck shell=sh
+# myos status  what is running, under the name the make engine used for ps
+myos_cmd_status() {
+  # shellcheck source=lib/cmd/_compose.sh
+  . "$MYOS_ROOT/lib/cmd/_compose.sh"
+  myos_cmd_compose ps
+}