Added support for SAP / Sybase Anyhwere SQL dialect

[madf0x]

I fixed the named parameter issues by adding the possibilty to add a parameter suffix (in SAnywhere SQL its ?paramName?) and made the suffix default to empty string.

The sybase anywhere implementation is very close to MS SQL, so I only made a few necessary changes. I tested it in a customer project and so far it seems to work fine.

[MoonStorm]

Wow, thank you so much! I'll do some research to understand what it takes to add it to our test suite.

[madf0x]

You're welcome, thank you for actively maintaining this dapper extension. I'll have to look into dapper to fix it there too.

[ev1ls33d]

Just noticed I got a little mixed up with my git accounts, don't worry, all the code came from the same person :)

[MoonStorm]

Discovered a lot of problems with the code after attaching tests to it so you might wanna check the changes we've made to your code for 3.1.

[ev1ls33d]

thanks for the feedback, I will look into your changes.