Fixes #15217

Also, change the column header from "Style" to "Required Style"

Fixes #12669. Addresses one part of #9674

Fixes both the general code styles page and the naming styles page

This reverts commit 9f30b914.

This reverts commit 12ce69e2.

Reverting this because it is causing VSI test failures, especially around Razor.

This change also introduces Specification and Style management (deleting and editing).

Also, fixes #14358

Explicitly state that suppression state column in error list is only supported for intellisense diagnostics (#13387)

1. Suppression state column shows N/A for build diagnostics.
2. A descriptive tooltip is now shown on error list entries with unsupported suppression state, guiding users to switch to intellisense diagnostics for suppression.

Fixes #11371

and plumb them through the UI, persistence, analyzer/fixer and
other parts of the system. update the simplifier to use the new options.
update codegen features as necessary.

this gives an ability for host (vs) to talk to remote host (service hub)

Cut the following features:
1. Move type dialog
2. Make type partial.

Trimming the feature set being offered, targeting core scenarios and
dropping fringe features.

Extract Interface (fixes #9958)
- Read textbox labels
- Read extractable members

Generate Type (fixes #9959)
- Read label text on dropdowns
- Read combobox items

Change Signature (fixes #9957)
- Read parameter and button text

Options pages (fixes #9962)
- Read labels/checkboxes/radiobuttons

Revert "Revert "Disable diagnostic service for projects that we know we don't have all information to provide good results.""

Revert "Disable diagnostic service for projects that we know we don't have all information to provide good results."

Implements #7064

This change includes:

- An analyzer and codefix for enforcing naming styles and fixing symbol names to comply with a chosen & configurable set of naming rules.
- A set of Enforcement Levels that can be applied to different naming rules.
- A mechanism for linking from a lightbulb preview to the option that caused the related diagnostic to be created (could be moved to a different PR or release)
- Moving of the "Formatting" options pages under the Code Style node.