Add user dic support

[r9y9]

finally replaces #26 with:

• more consistent API with the original mecab
• more descriptive API to let the users know they update the global state of the package
• unit tests

[r9y9]

Tests failed on window 🤔

Windows fatal exception: access violation

Thread 0x000018a8 (most recent call first):
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\threading.py", line 316 in wait
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\threading.py", line 581 in wait
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\site-packages\tqdm\_monitor.py", line 60 in run
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\threading.py", line 980 in _bootstrap_inner
  File "C:\hostedtoolcache\windows\Python\3.9.13\x64\lib\threading.py", line 9[37](https://github.com/r9y9/pyopenjtalk/actions/runs/6914049216/job/18811513572?pr=72#step:6:38) in _bootstrap

Current thread 0x00001044 (most recent call first):
  File "d:\a\pyopenjtalk\pyopenjtalk\pyopenjtalk\__init__.py", line 245 in mecab_dict_index
  File "D:\a\pyopenjtalk\pyopenjtalk\tests\test_openjtalk.py", line 103 in test_userdic

[r9y9]

================================== FAILURES ===================================
________________________________ test_userdic _________________________________

    def test_userdic():
        for text, expected in [
            ("nnmn", "n a n a m i N"),
            ("GNU", "g u n u u"),
        ]:
            p = pyopenjtalk.g2p(text)
            assert p != expected
    
        with tempfile.NamedTemporaryFile(
            mode="w", encoding="utf-8", suffix=".csv", delete=False
        ) as f:
            f.write("\uff4e\uff4e\uff4d\uff4e,,,1,\u540d\u8a5e,\u4e00\u822c,*,*,*,*,\uff4e\uff4e\uff4d\uff4e,\u30ca\u30ca\u30df\u30f3,\u30ca\u30ca\u30df\u30f3,1/4,*\\n")
            f.write("\uff27\uff2e\uff[35](https://github.com/r9y9/pyopenjtalk/actions/runs/6914217786/job/18811840384#step:6:36),,,1,\u5[40](https://github.com/r9y9/pyopenjtalk/actions/runs/6914217786/job/18811840384#step:6:41)d\u8a5e,\u4e00\u822c,*,*,*,*,\uff27\uff2e\uff35,\u30b0\u30cc\u30fc,\u30b0\u30cc\u30fc,2/3,*\\n")
            f.close()
    
            with tempfile.NamedTemporaryFile(
                mode="w",
                encoding="utf-8",
                suffix=".dic",
                delete=False,
            ) as f2:
                pyopenjtalk.mecab_dict_index(f.name, f2.name)
>               pyopenjtalk.update_global_jtalk_with_user_dict(f2.name)

tests\test_openjtalk.py:110: 
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
pyopenjtalk\__init__.py:266: in update_global_jtalk_with_user_dict
    _global_jtalk = OpenJTalk(
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

>   raise RuntimeError("Failed to initalize Mecab")
E   RuntimeError: Failed to initalize Mecab

Failures on Windows. Hard to debug without having a windows machine...

[r9y9]

Windows-specific behavior of tempfiles was the root cause. Workaround by not using the tempfile completely.