Added rules for MD4 and RIPEMD160

[expp121]

• Rule G406 responsible for the usage of deprecated MD4 and RIPEMD160 added.
• Rules G506, G507 responsible for tracking the usage of the already mentioned libraries added.
• Slight changes in the Makefile(make clean wasn't removing all expected files)
• Added license to analyzer_test.go

closes #1162

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 69.25%. Comparing base (6382394) to head (76e6935).

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1163 +/- ## ========================================== + Coverage 69.00% 69.25% +0.24% ========================================== Files 70 71 +1 Lines 3833 3864 +31 ========================================== + Hits 2645 2676 +31 Misses 1069 1069 Partials 119 119 ```

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[expp121]

Another question I have is: Should I add licenses to newly created files, and if yes, who should I write as the copyright holder?

[ccojocar]

Another question I have is: Should I add licenses to newly created files, and if yes, who should I write as the copyright holder?

Please do