trace_processor: add RUN_METRIC to execute dependency files from SQL

This allows for SQL files to rely on other SQL files to be generated
before being executed.

Context: go/perfetto-metrics
Bug: 129747127
Change-Id: I14fe27dcbec1e56e95a8123bd51a539ae428633b
diff --git a/BUILD b/BUILD
index aabe5ae..7fe1cb5 100644
--- a/BUILD
+++ b/BUILD
@@ -25,6 +25,7 @@
     name = "gen_merged_sql_metrics",
     srcs = [
         "src/trace_processor/metrics/android/android_mem.sql",
+        "src/trace_processor/metrics/android/android_mem_lmk.sql",
     ],
     cmd = "$(location gen_merged_sql_metrics_py) --cpp_out=$@ $SRCS",
     outs = [