build(ci): add shellcheck shell hints

Author: mroth

commands/inits/data/aliases.sh

@@ -1,3 +1,5 @@
+# source file: aliases.sh
+# shellcheck shell=sh
 alias gs='scmpuff_status'
 alias ga='git add'
 alias gd='git diff'

commands/inits/data/git_wrapper.sh

@@ -1,3 +1,6 @@
+# source file: git_wrapper.sh
+# shellcheck shell=sh
+
 # Remove any existing git alias or function
 unalias git > /dev/null 2>&1
 unset -f git > /dev/null 2>&1

commands/inits/data/status_shortcuts.sh

@@ -1,3 +1,5 @@
+# source file: status_shortcuts.sh
+# shellcheck shell=sh
 scmpuff_status() {
   local scmpuff_env_char="e"