This PR adds the changes required to make all the build images CI workflows pass in terms of building the images, and verifying they are all upgraded to LLVM 14. A successful run can be seen here. The PR also includes some small quality of life improvements in terms of code formatting.

These changes were made to support RedBPF #312. The specific changes include:

• I added Set image name lowercase steps in the publish workflow to lowercase REDBPF_IMAGE_NAME. This was required so that someone like myself who forks and has uppercase letters in their GitHub username can produce docker images with a valid name.
• Updated Ubuntu 21.04 to 22.04 as 21.04 is now EOL.
• Updated Fedora 34 to 36
• Updated Alpine 3.14 to Alpine Edge
• Updated multiple apt-get install blocks to have one package per line to make visual comparison across files easier
• In multiple cases I updated the installation script to reference llvm14
• In multiple cases I added a symlink from the distro specific location of llvm-config-14 to /usr/bin/llvm-config
• In multiple cases I updated the llvm-config --version check script from 13 to 14
• Added max_parallel_download=20 and fastestmirror=True to the Fedora dnf.conf to speed up image build times
• Added emerge-websync to Gentoo to overcome spurious network errors when building
• Added emerge app-portage/mirrorselect and mirrorselect -s3 -b10 -D -c USA to Gentoo to hopefully speed up build times. I am not sure this is necessary with emerge-webrsync but my Gentoo was non-existent prior to this PR 😺

What I did not do was devise a way to parameterize the llvm version, which seems like a good idea in terms of future maintenance. I can do that in a subsequent PR or this one if desired.