Add lvs-X targets to run LVS independently

- TODO: run count_lvs.py on the results
- TODO: update GL netlists with full/corrected names for power pins
diff --git a/spi/lvs/run_lvs.sh b/spi/lvs/run_lvs.sh
new file mode 100644
index 0000000..77ff185
--- /dev/null
+++ b/spi/lvs/run_lvs.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+NETGEN_SETUP=$PDK_ROOT/sky130A/libs.tech/netgen/sky130A_setup.tcl
+
+netgen -batch lvs "$1 $3" "$2 $3" ${NETGEN_SETUP} $2_comp.out -json | tee $2_comp_lvs.log