* Added Error 8053

* Requested PR Changes

* Update StructsTests.cs

* Update src/Compilers/CSharp/Test/Semantic/Semantics/StructsTests.cs
Co-authored-by: NRikki Gibson <rikkigibson@gmail.com>
Co-authored-by: NRikki Gibson <rikkigibson@gmail.com>

Add new information for portable pdbs to help reconstruct the same compilation if source is available. Added spec file with detailed description of design.

Implements #41395

Fixes #44789

Merge records feature into master

* Put record parameters in scope withing instance initializers

https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-06-01.md
Also fixes #44879.

* Follow-up on merge

* Share closure across initializers and the base call.

Rename new feature to 'remove confusing suppression'

The compiler now uses a reserved name for the clone method which only
records will generate. Some existing tests are interesting if we ever
allow user-generation of the clone method but cannot be run in the
current state. I've left them in, but marked them skipped.

Fix duplicate/inaccurate results in LSP GoToImpl

Ensure correct binder is used to bind constructor initializers for synthesized parameter-less and copy constructors in records. (#44910)

Fixes #44898.

Use MEF instead of direct construction

Add feature to remove confusing use of suppression operator

* Add reqired API for moving SBD analyzer OOP

* Add the missing lisense header

* Add another missing lisense header

* Simplify some wrapper types

* Restore all the delete & edit API, mark them as Obsolete. Add a callback interface

* Fix typo

* Obselete some more APIs

* Add a dispose API

* Obselete more wrapper

* Remove the unused wrapper

* Remove a unused method

Relevant LDM notes - https://github.com/dotnet/csharplang/blob/master/meetings/2020/LDM-2020-06-01.md

Embed generated source texts in the portable PDB:
- Allows stepping in etc. in the IDE as well as a dump debugging after compilation
- Consistent ordering of generated syntax trees.
- Unique hint names
- Restrict hint names to file path legal characters
- Add tests

Update src/Features/CSharp/Portable/RemoveUnnecessarySuppression/CSharpRemoveUnnecessarySuppressionCodeFixProvider.cs
Co-authored-by: NManish Vasani <mavasani@microsoft.com>

Fix fading locations for unnecessary code.

Potentially fixed a bug regarding static items not bolding

Ensure that TodoCommentOptions are serialized to OOP