## Summary of the Pull Request
Introduces convenience type `til::size` which automatically implements our best practices for size-related types and provides automatic conversions in/out of the relevant types.
## PR Checklist
* [x] In support of Differental Rendering #778
* [X] I work here.
* [x] Tests added/passed
* [x] I'm a core contributor.
## Detailed Description of the Pull Request / Additional comments
- Automatically converts in from anything with a X/Y (console `COORD`) or cx/cy (Win32 `SIZE`)
- Automatically converts out to `COORD`, `SIZE`, or `D2D1_SIZE_F`.
- Constructs from bare integers written into source file
- Default constructs to empty
- Uses Chromium Math for all basic math operations (+, -, *, /)
- Provides equality tests
- Adds initial proposal for division-to-ceiling (round up division) that attempts to `ceil` without any floating point math.
- Accessors for height/width
- Type converting accessors (that use safe conversions and throw) for height/width
- Convenience function for area calculation (as that's common with type) and uses safe math to do it.
- TAEF/WEX Output and Comparators so they will print very nicely with `VERIFY` and `Log` macros in our testing suite.
## Validation Steps Performed
- See automated tests of functionality.
til::color will help us move away from COLORREF internally. It supports
conversion to/from COLORREF, and from all types of structs containing
members named R, G, B and A (or r, g, b, and a).
## Validation Steps Performed
Tests; run through profile/colorScheme deserialization with `til::color`
instead of `uint32_t` or `COLORREF`.
## Summary of the Pull Request
Despite being specified as `noexcept`, `FillConsoleOutputCharacterA` emits an exception when a call to `ConvetToW` is made with an argument character which can't be converted. This PR fixes this throw, by wrapping `ConvertToW` in a try-catch_return.
## PR Checklist
* [x] Closes#4258
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [x] Tests added/passed: thanks @miniksa
## Detailed Description of the Pull Request / Additional comments
Following the semantics of other `FillConsoleOutputCharacter*` the output param `cellsModified` is set to `0`. The try-catch_return is also what other functions of this family perform in case of errors.
## Validation Steps Performed
Original repro no longer crashes.
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## Summary of the Pull Request
Let's give it a test drive.
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## References
<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist
* [x] Closes#4162
* [x] CLA signed. If not, go over [here](https://cla.opensource.microsoft.com/microsoft/Terminal) and sign the CLA
* [ ] Tests added/passed
* [ ] Requires documentation to be updated
* [ ] I've discussed this with core contributors already. If not checked, I'm ready to accept this work might be rejected in favor of a different grand plan. Issue number where discussion took place: #xxx
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## Detailed Description of the Pull Request / Additional comments
<!-- Describe how you validated the behavior. Add automated tests wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
Build and run it.
## Summary of the Pull Request
Introduces a type that is basically an array (stack allocated, fixed size) that reports size based on how many elements are actually filled (from the front), iterates only the filled ones, and has some basic vector push/pop semantics.
## PR Checklist
* [x] I work here
* [x] I work here
* [x] I work here
* [ ] I'd love to roll this out to SomeViewports.... maybe in this commit or a follow on one.
* [ ] We need a TIL tests library and I should test this there.
## Detailed Description of the Pull Request / Additional comments
The original gist of this was used for `SomeViewports` which was a struct to hold between 0 and 4 viewports, based on how many were left after subtraction (since rectangle subtraction functions in Windows code simply fail for resultants that yield >=2 rectangle regions.)
I figured now that we're TIL-ifying useful common utility things that this would be best suited to a template because I'm certain there are other circumstances where we would like to iterate a partially filled array and want it to not auto-resize-up like a vector would.
## Validation Steps Performed
* [ ] TIL tests added
<!-- Enter a brief description/summary of your PR here. What does it fix/what does it change/how was it tested (even manually, if necessary)? -->
## Summary of the Pull Request
- Enables auditing of Virtual Terminal libraries (input, adapter, parser)
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## PR Checklist
* [x] Rolls audit out to more things
* [x] I work here
* [x] Tests should still pass
* [x] Am core contributor
* [x] Closes#3957
<!-- Provide a more detailed description of the PR, other things fixed or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments
This is turning on the auditing of these projects (as enabled by the heavier lifting in the other refactor) and then cleaning up the remaining warnings.
<!-- Describe how you validated the behavior. Add automated tests wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed
- [x] Built it
- [x] Ran the tests
