RubyGems command support

CodeArtifact supports the gem install and gem push commands. CodeArtifact does not support the following gem commands:

• gem fetch

• gem info --remote

• gem list --remote

• gem mirror

• gem outdated

• gem owner

• gem query

• gem search

• gem signin

• gem signout

• gem sources --add

• gem sources --update

• gem specification --remote

• gem update

• gem yank