Bump major versions for actions/checkout and actions/upload-artifact

feat: fix typo on LinkedIn link

feat: change first project to showcase my website

Instead of putting the CloudQuestionsApp project (which is still
a bit rough) I find that it is a better idea to add my personal
website into the mix, which is a project that has a clear end product,
besides being properly documented in the README file.

feat: add .gitignore

There are some files that do not need to be in the repository.
I previously ignored them privately (.git/info/exclude), but
there is no real need for that, just add the .gitignore to the repo.

Adding final changes for the v1.0.1 release.