* Clean up string resources, use Arcade resx generator

* CodeLens resources


* Use NET20 instead of NETFX20

fix for language code capitalization

* Refactor tuple implementation

* Tweaks

* Address PR feedback

* Pass tuple data in constructors

* Address more feedback

* Tweak comparison

* Restore constructWithTypeParameters flag to avoid overflow

* Assert that tuple parameter matches TupleUnderlyingType somewhat

* Rename to TupleData. Address some IDE feedback

* Remaining TODO2's

* Fix last IDE test!

* Factor array comparison

* Tweak WithTupleData and EqualsIgnoringTupleUnderlyingType

* Expand a test

* Remove duplicate line

* Remove an EE test for badly formed ValueTuple type

* PR feedback from Neal

* Restore an IDE test without ValueTuple

* Rename constants

* Restore formatting

Fixes #39731.

- Declaration of classes, structures and enums within variant interfaces is disallowed.
- Nested classes synthesized by the compiler don't have variant emitted type parameters.
- Local functions and lambdas used within a variant interface always have display class.

This change also separates implementation of ISymbol interfaces from internal symbols in C# compiler.

Fixes #24737

When we added support for tracking static fields as part of nullable
analysis, we used -1 for their containing slot. Negative numbers are
not meant to be used as actual slots and flowed through the flow analysis
code, they are only used as sentinels from slot-returning methods to indicate
that the variable in question is not tracked. The appropriate root
slot for a static variable is the same as the root slot for a top-level tracked
variable (like a local), which is 0.

Fixes #38725

* Require /unsafe flag for SkipLocalsInitAttribute

* Use Unsafe

Updating TPN to the current MSFT format and adding Humanizer, SQLitePCLRaw and ICSharpCode.Decompiler (#38524)

* Updatiing TPN to current MSFT format and adding Humanizer

* updated vsix manifests, removed humanizer from source code tpn and added more re-distributed notes into compiled package tpn

* updates from LCA

* extra lines

* feedback addressed

Some violations were us approximating theories, so this just converts
to using theories.

VB: Support protected access for interface members.

Closes #35827.

Including more projects that have a dependency on ilasm.