Feature: Support setting aliases when installing a specific version

[Kurok1]

When I use sdk install <candidate> [version], I have to remember the name of each version. Can aliasing be supported?

For example, I use sdk install java 8.0.412-zulu, I can set an alias(such as 8-zulu) for 8.0.412-zulu, later I can use this alias to set the version