add slides as-is from 2024-07-22-talk-tcd-spincomp

.gitignore

presentation/backmatter/discussion.tex

presentation/backmatter/references.tex

presentation/config/header.tex

presentation/config/user_macros.tex

presentation/frontmatter/slides-repo.tex

presentation/frontmatter/titlepage.tex

presentation/mainmatter/introduction.tex

presentation/mainmatter/kkr-jlcdm.tex

presentation/mainmatter/kkr-theory.tex

presentation/presentation.tex