Fix several bugs in ets_frontend · Pull Request !6164 · OpenHarmony/arkcompiler_ets_frontend

Issue: https://gitee.com/openharmony/arkcompiler_ets_frontend/issues/ICEBI4

Reason: 
1. unary tilde argument convert to integer in checker which avoids conversion to interger in etsgen. verifier catch it and breaks.
2. current implementation does not store init in function for global decl

Description:
1. preserve float/double type for unary tilde argument in checker;
2. convert float/double type to int/long for unary tilde argument in
   etsgen
3. store init in function for global decl

Test:

```
root@DESKTOP-F2JQLVI:static_core# tests/tests-u-runner/runner.sh --ets-runtime --build-dir cmake-build-debug --processes=all
/root/.venv-panda activated
RUNNER_OPTIONS= 
ALL OPTIONS: --ets-runtime --build-dir cmake-build-debug --processes=all
Loaded 968 tests from directory '/tmp/ets/ets-runtime/gen'. Excluded 0 tests are not loaded.
Summary(ets-runtime):
Total:                          968  
Passed:                         912  
Failed (new failures):          0    
Ignored, but passed:            3    
Ignored (known failures):       53   
Runner has been working for 1118 se
```

类型	指派人员	状态
审查	@egavrin 由 CODEOWNERS 文件第 18 行指派为审查者	进行中 (0/1人)
审查	godmiaozi zhuoli72 gavin1012_hw 徐城 Urakov Alexandr Chernykh Sergey Vsevolod Pukhov	进行中 (0/1人)
测试	openharmony_ci 已测试通过	已完成 (1/1人)

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