ceylon.test: support parametrized tests

[thradec]

see discussion in #158

[thradec]

Rebased and merged to master, via facc616 and ceylon/ceylon-ide-eclipse@2c68a85.

Recapitulation:

• arguments values can be provided via annotations, which satisfy contract ArgumentProvider or ArgumentListProvider
• there is currently one implementation of this concept, annotation parameters (another can be easily implemented)
• arguments values are resolved lazily
• before/after callbacks can be parameterised also
• ide/reports shows every test variant independently

Example:

shared {[Integer, Integer]*} fibonnaciNumbers => {[1, 1], [2, 1], [3, 2], [4, 3], [5, 5], [6, 8] ...};

test
parameters(`value fibonnaciNumbers`)
shared void shouldCalculateFibonacciNumber(Integer input, Integer result)
    => assert(fibonacciNumber(input) == result);

I'm going to close this issue, for any improvements or new usecases, please open new issue.

[luolong]

:+1: Good work!