Fix module-file name collisions

Bazel doesn't allow a module and file with the same name.

Bug: 198619163
Test: m ime, verified it was still installed to out/target/product/emulator64_x86_64/system/bin/ime and not ime.sh
Change-Id: I214e190e159a7aff9149e77146d1a493992e885d
diff --git a/cmds/pm/Android.bp b/cmds/pm/Android.bp
index 847dbab..0e61a9e 100644
--- a/cmds/pm/Android.bp
+++ b/cmds/pm/Android.bp
@@ -20,5 +20,5 @@
 
 sh_binary {
     name: "pm",
-    src: "pm",
+    src: "pm.sh",
 }
diff --git a/cmds/pm/pm b/cmds/pm/pm.sh
similarity index 100%
rename from cmds/pm/pm
rename to cmds/pm/pm.sh