Extract Clojure compilation error handling into cider-compilation.el

Move the ~500-line compilation-error handling subsystem out of
cider-eval.el into its own module.  Sits below cider-eval.el in the
layering: turns nREPL eval-error / stacktrace responses into the
*cider-error* buffer, source overlays, and inline messages.

Moved:

- The user-tunable knobs: cider-show-error-buffer, cider-auto-jump-to-error,
  cider-auto-select-error-buffer, cider-error-highlight-face,
  cider-warning-highlight-face, cider-inline-error-message-function,
  cider-clojure-compilation-error-phases (plus its default value).
- The compilation/error parsing and rendering subsystem:
  cider-clojure-compilation-regexp, cider-module-info-regexp,
  cider-compilation-regexp, cider-extract-error-info,
  cider-handle-compilation-errors, cider--display-error-unobtrusively,
  cider--handle-stacktrace-response, cider--analyze-last-stacktrace,
  cider-default-err-{handler,op-handler,eval-handler,eval-print-handler},
  cider--handle-err-eval-response, cider--clojure-1.10-{error,location},
  cider--clojure-warning, cider--render-stacktrace-causes,
  cider--find-last-error-location, cider--goto-expression-start,
  cider--show-error-buffer-p, cider-new-error-buffer,
  cider-emit-into-color-buffer, cider-jump-to-compilation-error,
  cider-find-property.
- Highlight-clearing helpers from the old "Utilities" section
  (cider--clear-compilation-highlights, cider-clear-compilation-highlights,
  cider--quit-error-window).
- cider--shorten-error-message (only used as the default of
  cider-inline-error-message-function).

cider-eval.el requires cider-compilation and drops compile from its
requires (no longer needed there).  Two consumers that don't go through
cider-eval (cider-log.el and cider-test.el) add an explicit require for
cider-auto-select-error-buffer.

The new file forward-declares only `cider-repl-mode' (used in a
derived-mode-p check); no other shims needed.

cider-eval.el drops from 1650 to 1156 lines.

Author: bbatsov