Adding clang-format as recommended by linux kernel

[hariharan-devarajan]

Using clang format to format our code automatically.

Added clang-format check GitHub action to ensure the code is correctly formated before merging.

[hariharan-devarajan]

Depends on #123

[coveralls]

Pull Request Test Coverage Report for Build 6188102322

• 840 of 840 (100.0%) changed or added relevant lines in 10 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 6187607641:	0.0%
Covered Lines:	996
Relevant Lines:	996

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💛 - Coveralls