feat!(cli): load project .doomrc instead of ci.el

BREAKING CHANGE: Before, 'doom ci' would load
$GIT_WORKING_TREE/.github/ci.el, to give users/projects an opportunity
to provide project-local configuration for bin/doom (mainly for CI/CD).
Now, this ci.el file is no longer loaded and instead, *all* bin/doom
sessions will walk up the file tree and load the first .doomrc it finds.

This gives bin/doom users a more general place configure all of its
commands, and not just 'doom ci' commands.

Extras:
- Adds .doomrc to auto-mode-alist (so that it starts in
  emacs-lisp-mode).

ci.el

@@ -1,53 +0,0 @@
-;;; ci.el -*- lexical-binding: t; no-byte-compile: t; -*-
-;;; Commentary:
-;;; Code:
-
-(after! doom-cli-ci
-  ;;; Commit linter types
-  (add-to-list 'doom-ci-commit-types 'module)
-  (add-to-list 'doom-ci-commit-scopeless-types 'module)
-
-  ;;; Commit linter scopes
-  (add-to-list 'doom-ci-commit-scopes "cli")
-  (add-to-list 'doom-ci-commit-scopes "lib")
-  (add-to-list 'doom-ci-commit-scopes "docs")
-  (add-to-list 'doom-ci-commit-scopes '(docs "install" ci-check-docs-scope))
-  (add-to-list 'doom-ci-commit-scopes #'ci-check-module-scope)
-  ;; DEPRECATED Will be removed once modules live in their own repo
-  (add-to-list 'doom-ci-commit-scopes '(release "modules")))
-
-(after! doom-cli-make
-  ;;; Codeowners
-  ;; (dolist (path (cdr (doom-module-load-path (list doom-modules-dir))))
-  ;;   (save-match-data
-  ;;     (when (string-match "/modules/\\([^/]+\\)/\\([^/]+\\)/$" path)
-  ;;       (add-to-list 'doom-make-codeowners
-  ;;                    (cons (format "%s*" (substring (match-string 0 path) 1))
-  ;;                          (list "@doomemacs/maintainers"
-  ;;                                (format "@doomemacs/%s-%s"
-  ;;                                        (match-string 1 path)
-  ;;                                        (match-string 2 path))))))))
-
-  ;;; Documentation exporters
-  ;; (add-to-list 'doom-ci-docs-title-replace '("^Doom Emacs " . ""))
-  )
-
-
-;;; Helpers
-(cl-defun ci-check-module-scope (scope (&key type &allow-other-keys))
-  "Only allow :CATEGORY or MODULE scopes if they actually exist."
-  (seq-find (doom-rpartial
-             #'doom-glob (if (string-prefix-p ":" scope)
-                             (format "%s" (substring scope 1))
-                           (format "*/%s" scope)))
-            (list (doom-dir (dir!) "../modules/")
-                  (doom-dir doom-private-dir "modules/"))))
-
-(defun ci-check-docs-scope (scope _)
-  "Allow any filename in docs/* as a scope for docs commits."
-  (member
-   scope (doom-files-in (doom-path (dir!) "../docs")
-                        :match "\\.org$"
-                        :map #'file-name-base)))
-
-;;; ci.el ends here