feat: add lab-rv32i-freertos-heap-models card

src/common/hazard3_freertos_traps.S

@@ -0,0 +1,18 @@
+.section .text.hazard3_freertos_traps, "ax", @progbits
+
+/*
+ * Hazard3 init.S owns mtvec and exposes weak vector targets.  Strong symbols
+ * below route exceptions (including ecall/yield) and the machine timer IRQ to
+ * the official FreeRTOS RISC-V trap handler.
+ */
+.global handle_exception
+.type handle_exception, @function
+handle_exception:
+    j freertos_risc_v_trap_handler
+.size handle_exception, .-handle_exception
+
+.global isr_machine_timer
+.type isr_machine_timer, @function
+isr_machine_timer:
+    j freertos_risc_v_trap_handler
+.size isr_machine_timer, .-isr_machine_timer