shell: format with shfmt

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I86a7c52c32a14bf0a1184b6d7dc50112c49ade91
diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 0000000..2fb4fc6
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,6 @@
+# Config for shfmt
+[{*.sh,tools/sdbus++-gen*}]
+indent_style = space
+indent_size = 4
+switch_case_indent = true
+space_redirects = true