Replace JSR310 injection providers with DW AbstractParam

[kelnos]

We can't use DW's built-in AbstractParam subclasses because they always return a JSON error response that can't be overridden in service code without a lot of pain.

This also allows us to avoid needing separate guardrail modules for DW7-9 and DW10+, as the JSR310 AbstractParam subclasses are in separate artifacts and have different package names for the two version ranges.

Addresses #239

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[kelnos]

Hmm, it looks like the http4s tests are failing now (compiling the new test spec) due to ambiguous implicits. @blast-hardcheese any ideas?

[kelnos]

Excellent, you did indeed have ideas :D