Added array parsing to AddObject with []

Make possible to use legacy AddParameter for Body (restsharp#1869)

* Replacement for restsharp#1817

* Added the test from restsharp#1817

* Allow also adding properly named body parameters

Fixes (restsharp#1750)

* * Quoting form parameters (optional)
* Completed on 404 (can override)
* Test for IPv6

Merge remote-tracking branch 'origin/dev' into dev

Prerelease 107.2 (restsharp#1730)

* restsharp#1725 set the timeout status correctly
* restsharp#1727 use the HttpClient base address if it is set
* Streaming API support restsharp#1672 restsharp#1674

Setting the form boundary for restsharp#1716

Fixed missing resource in JSON overloads

Avoid changing the serializer root element per request

Use client encoding as fallback (restsharp#1693)

Merge branch 'more-tests' into dev