Add defclass snippet, change defgeneric and defmethod keys

snippets/emacs-lisp-mode/cl-defgeneric

@@ -1,6 +1,7 @@
 # -*- mode: snippet -*-
+# contributor: contrapunctus (tilde.team/~contrapunctus)
 # name: cl-defgeneric
-# key: defg
+# key: dg
 # --
 (cl-defgeneric ${1:name} (${2:args})
   "${3:docstring}"

snippets/emacs-lisp-mode/cl-defmethod

@@ -1,6 +1,7 @@
 # -*- mode: snippet -*-
+# contributor: contrapunctus (tilde.team/~contrapunctus)
 # name: cl-defmethod
-# key: defme
+# key: dm
 # --
 (cl-defmethod ${1:name} (${2:args})
   $0)

snippets/emacs-lisp-mode/defclass

@@ -0,0 +1,8 @@
+# -*- mode: snippet -*-
+# contributor: contrapunctus (tilde.team/~contrapunctus)
+# name: defclass
+# key: dc
+# --
+(defclass ${1:name} (${2:superclasses})
+  (${3:slots})
+  :documentation "${0:docstring}")