[stdlib] Add missing comparison operator tests

[laszlokindrat]

The following types are missing tests for the operators required by the Comparable trait (__le__, __ge__, etc.):

• [x] Int: done in https://github.com/modularml/mojo/pull/3161
• [x] IntLiteral: done in https://github.com/modularml/mojo/pull/3214
• [x] FloatLiteral: done in https://github.com/modularml/mojo/pull/3216
• [x] SIMD: done in https://github.com/modularml/mojo/pull/3221

We should also ensure they have tests for __eq__ and __ne__. Keep in mind that dunder methods should be tested directly (i.e. not through operator syntax sugar) for these basic numeric types to avoid unintended implicit conversions.:

[vguerra]

hello @laszlokindrat , just wanted to let you know that I pushed a couple of PRs to address the tasks in this issue: #3214 , #3216 and #3221

[laszlokindrat]

This is now complete thanks to @MatveyF, @vguerra, and @martinvuyk! 🎉

[martinvuyk]

I actually had nothing to do with this lol, just pushed a commit that referenced this during a rebase. Anyhow great work :D