Moved v3 code from NginxProxyManager/nginx-proxy-manager-3 to NginxProxyManager/nginx-proxy-manager

frontend/src/locale/src/HelpDoc/en/CertificateAuthorities.md

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+# Certificate Authorities Help
+
+## What is a Certificate Authority?
+
+A **certificate authority (CA)**, also sometimes referred to as a
+**certification authority**, is a company or organization that acts to validate
+the identities of entities (such as websites, email addresses, companies, or
+individual persons) and bind them to cryptographic keys through the issuance of
+electronic documents known as digital certificates.
+
+## Which CA should I use?
+
+Not all CA's are created equal and you would be fine to use the default,
+ZeroSSL.
+
+When using another CA it's worth considering the wildcard support and number of
+hosts-per-certificate that it supports.
+
+## Can I use my own custom CA?
+
+Yes, you can run your own CA software. You would only do this if you have a
+greater understanding of the SSL ecosystem.
+
+When requesting SSL Certificates through your custom CA and while they will be
+successful, browsers will not automatically trust your CA and visiting hosts
+using certificates issued by that CA will show errors.

frontend/src/locale/src/HelpDoc/en/index.ts

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+export * as CertificateAuthorities from "./CertificateAuthorities.md";