Add support for /product-services partition

This CL is largely an adaptation of Change-Id
I774e6a38003734421591e51bed103802ff84f432

It adds the following variables:

- BOARD_AVB_PRODUCT_SERVICES_KEY_PATH
- BOARD_AVB_PRODUCT_SERVICES_ALGORITHM
- BOARD_AVB_PRODUCT_SERVICES_ROLLBACK_INDEX_LOCATION
- BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE
- BOARD_PRODUCT_SERVICESIMAGE_EXTFS_INODE_COUNT
- BOARD_PRODUCT_SERVICESIMAGE_EXTFS_RSV_PCT
- BOARD_PRODUCT_SERVICESIMAGE_PARTITION_SIZE
- BOARD_PRODUCT_SERVICESIMAGE_JOURNAL_SIZE
- BOARD_PRODUCT_SERVICESIMAGE_SQUASHFS_BLOCK_SIZE
- BOARD_PRODUCT_SERVICESIMAGE_SQUASHFS_COMPRESSOR
- BOARD_PRODUCT_SERVICESIMAGE_SQUASHFS_COMPRESSOR_OPT
- BOARD_PRODUCT_SERVICESIMAGE_SQUASHFS_DISABLE_4K_ALIGN
- BOARD_PREBUILT_PRODUCT_SERVICESIMAGE
- BOARD_USES_PRODUCT_SERVICESIMAGE
- LOCAL_PRODUCT_SERVICES_MODULE
- PRODUCT_PRODUCT_SERVICES_BASE_FS_PATH
- PRODUCT_PRODUCT_SERVICES_VERITY_PARTITION
- PRODUCT_PRODUCT_SERVICES_PROPERTIES
- TARGET_COPY_OUT_PRODUCT_SERVICES
- TARGET_OUT_PRODUCT_SERVICES
- TARGET_OUT_PRODUCT_SERVICES_*

Bug: 80741439
Test: Successfully built product-services.img with one module in it, and flashed
on device. Also successfully built image with /system/product-services directory
and no /product-services partition.
Change-Id: I5d229f6ac729ea6df9ff1f14cee2e28972cd9b4d
diff --git a/core/product.mk b/core/product.mk
index 51b376a..55e1d04 100644
--- a/core/product.mk
+++ b/core/product.mk
@@ -128,6 +128,7 @@
     PRODUCT_PROPERTY_OVERRIDES \
     PRODUCT_DEFAULT_PROPERTY_OVERRIDES \
     PRODUCT_PRODUCT_PROPERTIES \
+    PRODUCT_PRODUCT_SERVICES_PROPERTIES \
     PRODUCT_CHARACTERISTICS \
     PRODUCT_COPY_FILES \
     PRODUCT_OTA_PUBLIC_KEYS \
@@ -167,6 +168,7 @@
     PRODUCT_SYSTEM_VERITY_PARTITION \
     PRODUCT_VENDOR_VERITY_PARTITION \
     PRODUCT_PRODUCT_VERITY_PARTITION \
+    PRODUCT_PRODUCT_SERVICES_VERITY_PARTITION \
     PRODUCT_SYSTEM_SERVER_DEBUG_INFO \
     PRODUCT_OTHER_JAVA_DEBUG_INFO \
     PRODUCT_DEX_PREOPT_MODULE_CONFIGS \
@@ -182,6 +184,7 @@
     PRODUCT_SYSTEM_BASE_FS_PATH \
     PRODUCT_VENDOR_BASE_FS_PATH \
     PRODUCT_PRODUCT_BASE_FS_PATH \
+    PRODUCT_PRODUCT_SERVICES_BASE_FS_PATH \
     PRODUCT_SHIPPING_API_LEVEL \
     VENDOR_PRODUCT_RESTRICT_VENDOR_FILES \
     VENDOR_EXCEPTION_MODULES \
@@ -378,6 +381,8 @@
 	BOARD_VENDORIMAGE_FILE_SYSTEM_TYPE \
 	BOARD_PRODUCTIMAGE_PARTITION_SIZE \
 	BOARD_PRODUCTIMAGE_FILE_SYSTEM_TYPE \
+	BOARD_PRODUCT_SERVICESIMAGE_PARTITION_SIZE \
+	BOARD_PRODUCT_SERVICESIMAGE_FILE_SYSTEM_TYPE \
 	BOARD_INSTALLER_CMDLINE \