Add babashka to interpreter-mode-alist

So files with a first line of e.g. `#!/bin/env bb`
will be in clojure-mode.

Author: dakra

CHANGELOG.md

@@ -25,6 +25,7 @@
 * [#571](https://github.com/clojure-emacs/clojure-mode/issues/571): Remove `project.el` integration.
 * [#574](https://github.com/clojure-emacs/clojure-mode/issues/574): Remove `clojure-view-grimoire` command.
 * [#584](https://github.com/clojure-emacs/clojure-mode/issues/584): Align to recent `pcase` changes on Emacs master.
+* Add `bb` (babashka) to `interpreter-mode-alist`.
 
 ## 5.12.0 (2020-08-13)
 

clojure-mode.el

@@ -3003,7 +3003,9 @@ With universal argument \\[universal-argument], act on the \"top-level\" form."
   (add-to-list 'auto-mode-alist '("\\.cljc\\'" . clojurec-mode))
   (add-to-list 'auto-mode-alist '("\\.cljs\\'" . clojurescript-mode))
   ;; boot build scripts are Clojure source files
-  (add-to-list 'auto-mode-alist '("\\(?:build\\|profile\\)\\.boot\\'" . clojure-mode)))
+  (add-to-list 'auto-mode-alist '("\\(?:build\\|profile\\)\\.boot\\'" . clojure-mode))
+  ;; babashka scripts are Clojure source files
+  (add-to-list 'interpreter-mode-alist '("bb" . clojure-mode)))
 
 (provide 'clojure-mode)