When doing inline rename on a named type (interface, enum, or class) show a checkbox to also rename the file.

The checkbox will always show if the kind supports file rename

The checkbox will be disabled if any of the following is true:
- The type is a partial type with multiple definition locations
- The type does not currently match the file name

Extend ISyntaxFactsService to add IsTypeDeclaration
Implement file rename as part of conflict resolution for inline rename. This will allow other features to do file rename that also use the conflict resolver, all they need to do is set the correct option.

* added partial load mode feature flag and made extract method to handle partial load mode.

when solution is opened in VS, currently we do not know when exactly solution is fully loaded or not. solution explorer might show all files but design time build might not have finished yet so, any semantic operation such as extract method or rename might do wrong thing since it doesn't know that it is dealing with missing information (solution).

we are trying to address this issue with partial load mode, new API platform is working on. basically, we are planning to block most of semantic operations (except completion/quickinfo/goto definition/signature help and navigate to. we might include FAR here as well) during partial load state.

also, for things like squiggle, LB and etc, we will disable those until solution is fully loaded since we don't actually know whether those data is correct or not during partial load state.

this change add featureflag so that we can incrementally add support for each features while dogfooding behavior across partners. as a first attempt, extract method is choosen for new experience.

other internal options are added so that we can try alternative behaviors and etc.

test is not added yet.

* fix merge break

* update string

* small tweak.

* PR feedbacks

* updated the title

* updated after discussing about PR

* do even cheaper version of getting text.

addscope doesn't work with description with blank line when scope is nested. wait dialog seems supporting only 2 lines.

until, I figure out this with platform team, making description one line.

* following PR feedback

Bring EditorFeaturesResources.*.xlf files in line with the current state of EditorFeaturesResources.resx.

This is a reworked version of #32616 targeting the dev16.0-preview3 branch.

* Add Static Symbols classification
* Add Namespace name classification
* Add Label name classification
* Add Overloaded Operator classification
* Add Control Keyword classification
* Updated TaggedText to work with the new classifications
* Add common AbstractNameSyntaxClassifier class for sharing code

Do not crash ExtractMethod when we run into a dataflowanalysis result we didn't account for. (#30554)

* Do not crash when we run into a dataflowanalysis result we didn't account for.

* Add comment.

* remove

* Improve error strings.

* Simplify.

* Assume the variable is read.

* Add test.

* KeyValueMessage.

Added AddMissingImport CodeRefactoring driven by PasteTrackingService

Added PasteTrackingService that handles the paste command and track
paste information for documents. This paste information can be used
by refactorings to make suggestions based on what was pasted.

Fixes #10272

* Add AB tests for code cleanup
revert the text change of Code_cleanup_is_not_configured, as the new text is not translated
Only SettingIsAlreadyUpdatedByExperiment to ture for Group B; always show gold bar if user setting is changed in AB test

These are missing languages which production team delivered today.

* remove usings when format document

* sort usings when format document

* add code fix

* hack fix for the issue with apply multiple changes.

* refactoring

* 3 changes

1. put open file editorconfig change tracking back
2. handle open file leaking when solution close with files opened case
3. don't share locks between editorconfig events and roslyn events

* skip the 'Remove unused variable' when format document

* changed code fix part to use "fix all" and only fixes P1 list rather than fix everything in the document. also not apply changes to buffer until everything is done rather than doing it per fix.

* made undo experience better

* add expression body as one of fix to offer

* add code fix options in format document settings

* add hidden box IsCodeCleanupConfiguredCheckBox to track if the user ever configured the code cleanup

* clean up

* fix some tests

* disable a test temporarily

* PR comments

* refactoring

* Revert "3 changes"

This reverts commit 7e0fd53f02a0e20d063440b3cce5569e51e71afc.

* PR comments

* PR comments

* renaming

* bug fixing

* PR comments

* refactoring

* refactoring

* refactoring

* refactoring

* Make ICodeCleanupService extend ILanguageService

* refactoring

* refactoring

* fix deadlock, call Format inside CodeCleanupService

* rename async methods

* PR comments

* move files under features

* PR comments

* PR comments

* Never Show this again will never show the code cleanup info bar for this user.

* rename

* use ImmutableArray