Support test suffixes to generate tabs with samples

[nikitinas]

Input

buid.gradle

korro {
   ...
   testSuffix("_strings", "Strings")
   testSuffix("_accessors", "Accessors")
}

doc.md

<!---test-->

tests.kt

fun test_strings() {
    // SampleStart
    code1
    // SampleEnd
}

fun test_accessors() {
    // SampleStart
    code2
    // SampleEnd
}

Output

doc.md

<!---test-->
<tabs>
<tab title="Strings">
code1
</tab>
<tab title="Accessors">
code2
</tab>
</tabs>
<!---END-->

[nikitinas]

As soon as <tabs> tag is specific to stardust tool and korro shouldn't depend on it, a more general API can be suggested:

korro {
   ...
   suffixes {
      match("_strings", "Strings", "Other data", ...)
      match("_accessors", "Accessors", "Another data", ...)
      beginGroup("<tabs>")
      endGroup("</tabs>")
      beginTest("<tab title=\"$0\">")
      endTest("</tab>")
   }
}