ors: Implement 'twrp format data' to format the data partition

Change-Id: Ic01685602a47d0b468616e3d5c3f26a44313cdc8
(cherry picked from commit 3b3bd12be11bd859a5f65bb1e8c71136044b3ad3)

openrecoveryscript.cpp

@@ -165,6 +165,14 @@ int OpenRecoveryScript::run_script_file(void) {
 					LOGERR("Error with wipe command value: '%s'\n", value);
 					ret_val = 1;
 				}
+			} else if (strcmp(command, "format") == 0) {
+				// Format
+				if (strcmp(value, "data") == 0 || strcmp(value, "/data") == 0 || strcmp(value, "factory") == 0 || strcmp(value, "factoryreset") == 0) {
+					PartitionManager.Format_Data();
+				} else {
+					LOGERR("Error with format command value: '%s'\n", value);
+					ret_val = 1;
+				}
 			} else if (strcmp(command, "backup") == 0) {
 				// Backup
 				DataManager::SetValue("tw_action_text2", gui_parse_text("{@backing}"));

orscmd/orscmd.cpp

@@ -43,6 +43,7 @@ void print_usage(void) {
 	printf("  backup <SDCRBAEM> [backupname]\n");
 	printf("  restore <SDCRBAEM> [backupname]\n");
 	printf("  wipe <partition name>\n");
+	printf("  format data\n");
 	printf("  sideload\n");
 	printf("  set <variable> [value]\n");
 	printf("  decrypt <password> [USER ID]\n");