Fold S.S.C.Encoding into new System.Security.Cryptography library

[bartonjs]

• Split the new library from just NetCoreAppCurrent to all of the varieties that S.S.C.Encoding had.
• Move src/libraries/System.Security.Cryptography.Encoding/src/System/... to src/libraries/System.Security.Cryptography/src/System/...
• Move src/libraries/System.Security.Cryptography.Encoding/src/Internal/Cryptography/* to src/libraries/System.Security.Cryptography.Encoding/src/System/Security/Cryptography/*
• Merge in the Strings.resx content that was needed.
  • Added two ObjectDisposedException.ThrowIf calls to eliminate a resource from the move.
• Move src/libraries/System.Security.Cryptography.Encoding/tests/... to src/libraries/System.Security.Cryptography.Encoding/tests/..., with a couple files gaining the "Tests" suffix that their class had.
• Fix the namespaces of the previously moved from-Primitives tests to match the new location.
• Fix the namespaces of the newly moved from-Encoding tests to match the new location.
• Make System.Security.Cryptography.Encoding ref & src just build as facades/forwarders.

Contributes to #55690.

[dotnet-issue-labeler]

Note regarding the new-api-needs-documentation label:

This serves as a reminder for when your PR is modifying a ref *.cs file and adding/modifying public APIs, to please make sure the API implementation in the src *.cs file is documented with triple slash comments, so the PR reviewers can sign off that change.

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Issue Details

---

• Split the new library from just NetCoreAppCurrent to all of the varieties that S.S.C.Encoding had.
• Move src/libraries/System.Security.Cryptography.Encoding/src/System/... to src/libraries/System.Security.Cryptography/src/System/...
• Move src/libraries/System.Security.Cryptography.Encoding/src/Internal/Cryptography/* to src/libraries/System.Security.Cryptography.Encoding/src/System/Security/Cryptography/*
• Merge in the Strings.resx content that was needed.
  • Added two ObjectDisposedException.ThrowIf calls to eliminate a resource from the move.
• Move src/libraries/System.Security.Cryptography.Encoding/tests/... to src/libraries/System.Security.Cryptography.Encoding/tests/..., with a couple files gaining the "Tests" suffix that their class had.
• Fix the namespaces of the previously moved from-Primitives tests to match the new location.
• Fix the namespaces of the newly moved from-Encoding tests to match the new location.
• Make System.Security.Cryptography.Encoding ref & src just build as facades/forwarders.

Author:	bartonjs
Assignees:	bartonjs
Labels:	area-System.Security
Milestone:	7.0.0

[bartonjs]

/azp list

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[bartonjs]

@steveisok is there a way for me to trigger WASM tests from the PR (or locally)? I'm guessing this (and the next several) code move(s) will turn on more tests that are expected to fail. Seems a bit nicer if I can see them to turn them off early.

[steveisok]

@steveisok is there a way for me to trigger WASM tests from the PR (or locally)?

We reactivated the full wasm interp leg on PR's, so you should get some indication.

[bartonjs]

We reactivated the full wasm interp leg on PR's, so you should get some indication.

Sure looks like it. Good thing Santi had feedback causing me to respin :)