build: Add prettier

eslint will also enforce prettier rules, so there is no need to call
prettier separately in CI.

Signed-off-by: Kristóf Marussy <kristof@marussy.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/prettier.config.cjs b/prettier.config.cjs
new file mode 100644
index 0000000..de2f53c
--- /dev/null
+++ b/prettier.config.cjs
@@ -0,0 +1,4 @@
+module.exports = {
+  singleQuote: true,
+  trailingComma: 'all',
+};