shell: Default to the normal state like in compilation-mode

shell-mode derives from comint-mode, so it currently defaults to the
insert state. Although, like compilation-mode, shell-mode is rarely
used interactively and should default to the normal state.

evil-collection.el

@@ -252,6 +252,7 @@ This will bind additional find-* type commands, e.g. usages, assignments, etc.."
     ruby-mode
     scroll-lock
     sh-script
+    shell
     ,@(when (>= emacs-major-version 28) '(shortdoc))
     simple
     slime

modes/shell/evil-collection-shell.el

@@ -0,0 +1,39 @@
+;;; evil-collection-shell.el --- Evil bindings for `shell' -*- lexical-binding: t -*-
+
+;; Copyright (C) 2021 Kira Bruneau
+
+;; Author: Kira Bruneau <kira.bruneau@pm.me>
+;; Maintainer: James Nguyen <james@jojojames.com>
+;; Pierre Neidhardt <mail@ambrevar.xyz>
+;; URL: https://github.com/emacs-evil/evil-collection
+;; Version: 0.0.1
+;; Package-Requires: ((emacs "25.1"))
+;; Keywords: evil, shell, tools
+
+;; This program is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; This program is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; Evil bindings for `shell'.
+
+;;; Code:
+(require 'evil-collection)
+(require 'shell)
+
+;;;###autoload
+(defun evil-collection-shell-setup ()
+  "Set up `evil' bindings for `shell'."
+  (evil-set-initial-state 'shell-mode 'normal))
+
+(provide 'evil-collection-shell)
+;;; evil-collection-shell.el ends here