docs: added troubleshooting component (#4255)

docs/content/troubleshooting/cli-installation-errors/_permission-errors.md

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+If you install the Medusa CLI tool with NPM and get a permission error, NPM proposes as a solution either re-installing NPM with a node version manager (nvm), or manually setting npm’s default directory.
+
+You can check out more information in [NPM’s documentation](https://docs.npmjs.com/resolving-eacces-permissions-errors-when-installing-packages-globally).

docs/content/troubleshooting/cli-installation-errors/_powershell-error.md

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+If you're using Powershell and you installed the CLI tool, but when you try to use it you get the error:
+
+```bash noReport
+command not found: medusa
+```
+
+Try closing your Powershell window and opening a new one.

docs/content/troubleshooting/cli-installation-errors/_reusable-section.mdx

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+import Troubleshooting from '@site/src/components/Troubleshooting'
+import PermissionErrorsSection from './_permission-errors.md'
+import PowershellErrorSection from './_powershell-error.md'
+import YarnErrorSection from './_yarn-error.mdx'
+
+<Troubleshooting
+  sections={[
+    {
+      title: "NPM Error: EACCES Permissions Errors",
+      content: <PermissionErrorsSection />
+    },
+    {
+      title: "Powershell Error: command not found: medusa",
+      content: <PowershellErrorSection />
+    },
+    {
+      title: "Yarn Error: command not found: medusa",
+      content: <YarnErrorSection />
+    }
+  ]}
+/>

docs/content/troubleshooting/cli-installation-errors/_yarn-error.mdx

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+import Tabs from '@theme/Tabs';
+import TabItem from '@theme/TabItem';
+
+If you install the Medusa CLI tool with Yarn, then try to use the CLI tool but get the error:
+
+```bash noReport
+command not found: medusa
+```
+
+You have to add Yarn’s install location to the PATH variable:
+
+<Tabs groupId="operating-systems" isCodeTabs={true}>
+<TabItem value="unix" label="MacOS / Linux" default>
+
+```bash
+export PATH="$(yarn global bin):$PATH"
+```
+
+</TabItem>
+<TabItem value="windows" label="Windows">
+
+```bash
+# MAKE SURE TO INCLUDE %path%
+setx path "%path%;c:\users\YOURUSERNAME\appdata\local\yarn\bin"
+# YOURUSERNAME is your account username
+```
+
+</TabItem>
+</Tabs>
+
+You can learn more in [Yarn’s documentation](https://classic.yarnpkg.com/en/docs/cli/global#adding-the-install-location-to-your-path).