chore: add custom.el to .gitignore

The custom.el is a file that is created by customizing emacs.
Do not persist this file in repo, as if the option is meant to
persist, it should be set in corresponding part of init.el

chore: use eglot-ensure instead of eglot-deferred

feat: add eglot-on function to turn on eglot

feat: add eglot instead of lsp-mode

feat: add evil-anzu

chore: remove orderless-flex matching style

feat: add transient levels config

fix: some fixes

fix: add vhdl-ts-indent level

feat: add custom setup script

feat: add vhdl treesitter mode

fix: correctly set evil-want-Y-yank-to-eol

fix: cape-dabbrev not showing results

feat: use Rust treesitter

feat: show startup time

fix: cape define dependant function in config

feat: add cape dabbrev and file capfs to completion-at-point

feat: use corfu instead of company

chore: do not explicitly call elpaca-process-quees

fix: remove mmm-mode req from nix-mode