Implement parsers and comparers for all built-in types

[rdumont]

Here is a list of them: https://go101.org/article/basic-types-and-value-literals.html

[DavidSubiros]

Hi, I created a parser for Int32 type, but I can't push the branch - would you accept new PRs for this repository?
For now I have forked the repository, please let me know