Add Observable<T>.Map<TOut> for simple observable transformations.

[codecov-commenter]

Codecov Report

Base: 99.03% // Head: 99.12% // Increases project coverage by +0.09% :tada:

Coverage data is based on head (613fe69) compared to base (db30217). Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1 +/- ## ========================================== + Coverage 99.03% 99.12% +0.09% ========================================== Files 18 19 +1 Lines 723 804 +81 ========================================== + Hits 716 797 +81 Misses 7 7 ``` | [Impacted Files](https://codecov.io/gh/nadako/TinkStateSharp/pull/1?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev) | Coverage Δ | | |---|---|---| | [src/TinkState/Runtime/Internal/Dispatcher.cs](https://codecov.io/gh/nadako/TinkStateSharp/pull/1/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev#diff-c3JjL1RpbmtTdGF0ZS9SdW50aW1lL0ludGVybmFsL0Rpc3BhdGNoZXIuY3M=) | `100.00% <ø> (ø)` | | | [...TinkState/Runtime/Internal/ObservableDictionary.cs](https://codecov.io/gh/nadako/TinkStateSharp/pull/1/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev#diff-c3JjL1RpbmtTdGF0ZS9SdW50aW1lL0ludGVybmFsL09ic2VydmFibGVEaWN0aW9uYXJ5LmNz) | `100.00% <ø> (ø)` | | | [src/TinkState/Runtime/Internal/ObservableList.cs](https://codecov.io/gh/nadako/TinkStateSharp/pull/1/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev#diff-c3JjL1RpbmtTdGF0ZS9SdW50aW1lL0ludGVybmFsL09ic2VydmFibGVMaXN0LmNz) | `100.00% <ø> (ø)` | | | [src/TinkState/Runtime/Observable.cs](https://codecov.io/gh/nadako/TinkStateSharp/pull/1/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev#diff-c3JjL1RpbmtTdGF0ZS9SdW50aW1lL09ic2VydmFibGUuY3M=) | `100.00% <ø> (ø)` | | | [src/TinkState/Runtime/Internal/AutoObservable.cs](https://codecov.io/gh/nadako/TinkStateSharp/pull/1/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev#diff-c3JjL1RpbmtTdGF0ZS9SdW50aW1lL0ludGVybmFsL0F1dG9PYnNlcnZhYmxlLmNz) | `100.00% <100.00%> (ø)` | | | [src/TinkState/Runtime/Internal/Binding.cs](https://codecov.io/gh/nadako/TinkStateSharp/pull/1/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev#diff-c3JjL1RpbmtTdGF0ZS9SdW50aW1lL0ludGVybmFsL0JpbmRpbmcuY3M=) | `98.43% <100.00%> (+0.22%)` | :arrow_up: | | [src/TinkState/Runtime/Internal/ConstObservable.cs](https://codecov.io/gh/nadako/TinkStateSharp/pull/1/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev#diff-c3JjL1RpbmtTdGF0ZS9SdW50aW1lL0ludGVybmFsL0NvbnN0T2JzZXJ2YWJsZS5jcw==) | `100.00% <100.00%> (ø)` | | | [src/TinkState/Runtime/Internal/State.cs](https://codecov.io/gh/nadako/TinkStateSharp/pull/1/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev#diff-c3JjL1RpbmtTdGF0ZS9SdW50aW1lL0ludGVybmFsL1N0YXRlLmNz) | `100.00% <100.00%> (ø)` | | | [.../TinkState/Runtime/Internal/TransformObservable.cs](https://codecov.io/gh/nadako/TinkStateSharp/pull/1/diff?src=pr&el=tree&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev#diff-c3JjL1RpbmtTdGF0ZS9SdW50aW1lL0ludGVybmFsL1RyYW5zZm9ybU9ic2VydmFibGUuY3M=) | `100.00% <100.00%> (ø)` | | Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Dan+Korostelev)

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