break out project snippet into its parts

snippets/battery1

@@ -0,0 +1,15 @@
+# -*- mode: snippet -*-
+# name: battery1
+# group: battery123
+# key: battery1
+# expand-env: (yas-indent-line fixed)
+# --
+b123setup
+b1bass1
+b1hand
+b1perc
+b1bass2
+b1drum1
+b1tac
+b1drum2
+b1warbler

snippets/battery123

@@ -4,7 +4,7 @@
 # key: battery123
 # expand-env: (yas-indent-line fixed)
 # --
-b1setup
+b123setup
 b1bass1
 b1hand
 b1perc

snippets/battery2

@@ -0,0 +1,13 @@
+# -*- mode: snippet -*-
+# name: battery2
+# group: battery123
+# key: battery2
+# expand-env: (yas-indent-line fixed)
+# --
+b123setup
+b2perca
+b2drum
+b2percb
+b2trump
+b2bass
+b2arpy

snippets/battery3

@@ -0,0 +1,18 @@
+# -*- mode: snippet -*-
+# name: battery3
+# group: battery123
+# key: battery3
+# expand-env: (yas-indent-line fixed)
+# --
+b123setup
+b2arpy
+b1perc
+b3drum
+b3bass
+b1hand
+b1tac
+b2percb
+b2bass
+b1bass1
+b3arpy
+b1warbler