core-lib: add auto-minor-mode, revise def-project-mode!

- Adds the auto-minor-mode package to replace our in-house
  implementation.
- Merges associate! into the def-project-mode! macro because associate!
  on its own is less useful than auto-minor-mode-alist,
  auto-minor-mode-magic-alist or hooks.
- Changes the semantics of :modes and :add-hooks properties of
  def-project-mode!. Its arguments are evaluated as is; lists will need
  to be quoted.

squash! core-lib: remove associate! macro

modules/tools/ansible/config.el

@@ -20,6 +20,6 @@
   :mode "\\.j2$")
 
 (def-project-mode! +ansible-yaml-mode
-  :modes (yaml-mode)
-  :add-hooks (ansible ansible-auto-decrypt-encrypt ansible-doc-mode)
+  :modes '(yaml-mode)
+  :add-hooks '(ansible ansible-auto-decrypt-encrypt ansible-doc-mode)
   :files ("roles/"))