refactor: Format root-level files (#3858)

* ✨ Create `format.mjs` script

* 👕 Add lint exception

* ⚡ Add root formatting to `format` command

* 🎨 Fix glob in `.prettierignore`

* 🚚 Improve naming

* 🎨 Format root-level files

* ⚡ Simplify check

* ⚡ Add period to extension

* ⚡ Locate config

* ⚡ Add `ignore` arg

* 🚚 Move `config` and `ignore` after check

docker/images/n8n-custom/README.md

@@ -3,10 +3,10 @@
 Dockerfile which allows to package up the local n8n code into
 a docker image.
 
-
 ## Usage
 
 Execute the following in the n8n root folder:
+
 ```bash
 docker build -t n8n-custom -f docker/images/n8n-custom/Dockerfile .
 ```

docker/images/n8n-debian/README.md

@@ -5,7 +5,6 @@ Dockerfile to build n8n with Debian.
 For information about how to run n8n with Docker check the generic
 [Docker-Readme](https://github.com/n8n-io/n8n/tree/master/docker/images/n8n/README.md)
 
-
 ```
 docker build --build-arg N8N_VERSION=<VERSION> -t n8nio/n8n:<VERSION> .
 

docker/images/n8n-rhel7/README.md

@@ -7,7 +7,6 @@ docker build --build-arg N8N_VERSION=<VERSION> -t n8nio/n8n:<VERSION> .
 docker build --build-arg N8N_VERSION=0.36.1 -t n8nio/n8n:0.36.1-rhel7 .
 ```
 
-
 ```
 docker run -it --rm \
   --name n8n \