Add some stuff related to cache

sim/application_wrapper/cache/application_wrapper_cache_l1_test.py

@@ -0,0 +1,19 @@
+import cocotb
+from cocotb.handle import Immediate
+
+from cocotb.clock import Clock
+from cocotb.triggers import Timer, RisingEdge, FallingEdge, with_timeout
+
+
+CLK_PERIOD = 5
+
+@cocotb.test
+async def sanity_test(dut):
+    cocotb.start_soon(Clock(dut.i_clk, CLK_PERIOD, unit="ns").start())
+
+    dut.i_rst.value = Immediate(1)
+    for _ in range(10):
+        await RisingEdge(dut.i_clk)
+    dut.i_rst.value = 0
+
+    await Timer(1, "us")