Camel-case tag helper directives

[glen-84]

When multiple words are joined and the full string is lower-cased (or upper-cased), it makes it difficult to read.

For example:

@addtaghelper X

Would it be possible to make directives case insensitive, or at least allow camel or pascal case?

@addTagHelper X

Unrelated to this ticket: Would it not make sense to use a different prefix for directives, so that they don't look like variables? Something like:

@!model WebApplication1.Models.LoginViewModel

... just a thought.

[danroth27]

We think directives should be case sensitive, but we think we should change addtaghelper to addTagHelper, removetaghelper to removeTagHelper, etc.

[glen-84]

Sounds good.

[dougbu]

Changed title from "RFC: Make directives case insensitive or allow camel case"