docs: create docs workspace (#5174)

* docs: migrate ui docs to docs universe

* created yarn workspace

* added eslint and tsconfig configurations

* fix eslint configurations

* fixed eslint configurations

* shared tailwind configurations

* added shared ui package

* added more shared components

* migrating more components

* made details components shared

* move InlineCode component

* moved InputText

* moved Loading component

* Moved Modal component

* moved Select components

* Moved Tooltip component

* moved Search components

* moved ColorMode provider

* Moved Notification components and providers

* used icons package

* use UI colors in api-reference

* moved Navbar component

* used Navbar and Search in UI docs

* added Feedback to UI docs

* general enhancements

* fix color mode

* added copy colors file from ui-preset

* added features and enhancements to UI docs

* move Sidebar component and provider

* general fixes and preparations for deployment

* update docusaurus version

* adjusted versions

* fix output directory

* remove rootDirectory property

* fix yarn.lock

* moved code component

* added vale for all docs MD and MDX

* fix tests

* fix vale error

* fix deployment errors

* change ignore commands

* add output directory

* fix docs test

* general fixes

* content fixes

* fix announcement script

* added changeset

* fix vale checks

* added nofilter option

* fix vale error

www/apps/docs/content/troubleshooting/database-errors/_connection-error.md

@@ -0,0 +1,10 @@
+When you start your Medusa backend you may run into the following error:
+
+```bash
+Error: connect ECONNREFUSED ::1:5432
+```
+
+This error occurs because the backend couldn't connect to the PostgreSQL database. The issue could be one of the following:
+
+1. PostgreSQL server isn't running. Make sure it's always running while the Medusa backend is running.
+2. The connection URL to your PostgreSQL database is incorrect. This could be because of incorrect credentials, port number, or connection URL format. The format should be `postgres://[user][:password]@[host][:port]/[dbname]`. Make sure that the connection URL format is correct, and the credentials passed in the URL are correct. You can learn more about formatting the connection URL [here](../../development/backend/configurations.md#postgresql-configurations)

www/apps/docs/content/troubleshooting/database-errors/_privileges.md

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+The database user you use in the `database_url` Medusa backend configuration must have create privileges. Otherwise, you'll face problems when running migrations.
+
+If you're using the `postgres` superuser, then it should have these privileges by default. Otherwise, make sure to grant your user create privileges. You can learn how to do that in [PostgreSQL's documentation](https://www.postgresql.org/docs/current/ddl-priv.html).

www/apps/docs/content/troubleshooting/database-errors/_sasl.md

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+You may get the following error while running `medusa new` or while running integration tests during [local development](../../development/fundamentals/local-development.md):
+
+```bash
+Error: SASL: SCRAM-SERVER-FIRST-MESSAGE: client password must be a string
+```
+
+If the error occurs while running `medusa new` and you've selected to enter your database credentials, either:
+
+1. Make sure your database credentials are correct;
+2. Or choose the Skip option to skip entering your database credentials.
+
+If the error occurs while running integration tests, make sure the following variable is set in your system's environment variable:
+
+```bash
+DB_HOST=<YOUR_DB_HOST>
+DB_USERNAME=<YOUR_DB_USERNAME>
+DB_PASSWORD=<YOUR_PASSWORD>
+```