Chore: Ignore task_plan.md and other generated files

Author: lum1n0us

.gitignore

@@ -1,3 +1,4 @@
+
 .cache
 .clangd
 .vs
@@ -40,3 +41,6 @@ samples/workload/include/**
 !samples/workload/include/.gitkeep
 
 # core/iwasm/libraries/wasi-threads
+task_plan.md
+tests/unit/aot-stack-frame/wasm-apps/test_aot.h
+tests/unit/runtime-common/wasm-apps/main.aot