Add new features and simplify code

[wkcn]

• Change Log
• [x] replace except: with except Exception:
• [x] Debug mode when building
• [x] Build arguments support
• [x] replace KERNEL_RUN(kernel, nthread) with KERNEL_RUN(kernel)
• [x] rename mobula.op.load_module to mobula.op.op_loader
• [x] Simplify code in op_loader.py
• [x] Add MOBULA_FUNC

[coveralls]

Pull Request Test Coverage Report for Build 400

• 79 of 105 (75.24%) changed or added relevant lines in 9 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage increased (+0.2%) to 79.671%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
mobula/test_utils.py	0	1	0.0%
mobula/build.py	1	5	20.0%
mobula/build_utils.py	3	13	23.08%
mobula/op/op_loader.py	63	74	85.14%
<!--	Total:	79	105	75.24%	-->

Totals
Change from base Build 394:	0.2%
Covered Lines:	1164
Relevant Lines:	1461

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💛 - Coveralls