Fix storageGen.lua, move it out of apps

storageGen.lua broke some time ago, since Milo stores non-used nodes in
the config with an "ignore" type, so if Milo was ever launched before
storageGen.lua, then storageGen.lua wouldn't work. Also, storageGen.lua
used to be stored in packages/milo/apps but it seems some shell or
package changes have made that no longer in the shell path, so I moved
storageGen.lua out of packages/milo/apps.

milo/autorun/milo.lua

@@ -6,6 +6,7 @@ fs.delete('packages/milo/Milo.lua')
 fs.delete('packages/milo/plugins/listing.lua')
 fs.delete('packages/milo/apis/milo.lua')
 fs.delete('packages/milo/plugins/manipulator.lua')
+fs.delete('packages/milo/apps')
 
 if peripheral.find('workbench') and shell.openForegroundTab then
 	shell.openForegroundTab('MiloLocal')