Add a new test tool which allows external test cases

[baominghelly]

Description

Add a new test tool which allows external test cases

Test

python test/infinicore/run_with_external_test_cases.py --nvidia

--- Scenario A: Single Case ---
🚀 Running 1 externally injected Case(s) for 'add'...

============================================================
Testing Add on NVIDIA
============================================================
TestCase(Custom Small Case - inputs=[in_0: tensor(2, 4), float32; in_0: tensor(2, 4), float32])
✓ Passed

============================================================
TEST SUMMARY
Total tests: 1
Passed: 1
Success rate: 100.0%

All tests passed!
============================================================

--- Scenario B: Multiple Cases List ---
🚀 Running 2 externally injected Case(s) for 'add'...

============================================================
Testing Add on NVIDIA
============================================================
TestCase(Custom Small Case - inputs=[in_0: tensor(2, 4), float32; in_0: tensor(2, 4), float32])
✓ Passed
TestCase(Custom Large Case - inputs=[in_0: tensor(16, 16), float32; in_0: tensor(16, 16), float32])
✓ Passed

============================================================
TEST SUMMARY
Total tests: 2
Passed: 2
Success rate: 100.0%

All tests passed!
============================================================
[1]    2837324 IOT instruction (core dumped)  python test/infinicore/run_with_external_test_cases.py --nvidia

[wooway777]

首先，这个功能应该是集成到framework里的，而不是作为一个外部脚本存在。
同时，必须要能在不修改代码的情况下，通过命令行选项指定文件并执行其中的测例，这点没有体现出来。
现在这个写法和新写一个测试脚本没有本质区别。

考虑这样几种使用场景：

1. 限定算子：
   1-1. 指定文件 python test/infinicore/ops/matmul.py --load [path-to-file]
   预期行为：用matmul跑指定文件中的所有测试
   如果指定文件不来自matmul则报错
   1-2. 指定文件夹 python test/infinicore/ops/matmul.py --load [path-to-dir]
   预期行为：遍历指定文件中所有符合格式的json文件，跑其中所有matmul测例
2. 不限定算子
   2-1. 指定文件 python test/infinicore/run.py --load [path-to-file]
   预期行为：用文件中指定的算子跑其中的所有测试
   2-2. 指定文件夹 python test/infinicore/run.py --load [path-to-dir]
   预期行为：遍历指定文件中所有符合格式的json文件，并用每个文件指定的算子跑该文件中的测例
3. 指定多个文件： --load [file-0] [file-1] [file-2]