Consolidate all existing errors

Consolidate existing errors and warnings related to preprocessor directives into this one file.

Author: BillWagner

.github/prompts/error-consolidation.md

@@ -0,0 +1 @@
+Add the contents of cs1027.md to the preprocessor-errors.md file, sort that file by 'source_path_from_root'. Add a redirection for cs1027.md to point to preprocessor-errors.md, add "cs1027: to the list of display names in the TOC for preprocessor-errors.md. Finally, delete cs1027.md

.openpublishing.redirection.csharp.json

@@ -363,6 +363,10 @@
             "source_path_from_root": "/docs/csharp/language-reference/compiler-messages/cs1683.md",
             "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/assembly-references"
         },
+        {
+            "source_path_from_root": "/docs/csharp/language-reference/compiler-messages/cs1691.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
         {
             "source_path_from_root": "/docs/csharp/language-reference/compiler-messages/cs0270.md",
             "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/array-declaration-errors"
@@ -1834,6 +1838,58 @@
             "source_path_from_root": "/docs/csharp/misc/cs1020.md",
             "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/overload-resolution"
         },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1027.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1028.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/language-reference/compiler-messages/cs1029.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1032.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1038.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1040.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1517.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1560.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1576.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1578.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1633.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1634.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1635.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
         {
             "source_path_from_root": "/docs/csharp/misc/cs1100.md",
             "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/extension-declarations"
@@ -1994,10 +2050,30 @@
             "source_path_from_root": "/docs/csharp/misc/cs1686.md",
             "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/lambda-expression-errors#syntax-limitations-in-lambda-expressions"
         },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1692.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1694.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1695.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1696.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
         {
             "source_path_from_root": "/docs/csharp/misc/cs1706.md",
             "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/lambda-expression-errors#syntax-limitations-in-lambda-expressions"
         },
+        {
+            "source_path_from_root": "/docs/csharp/misc/cs1709.md",
+            "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/preprocessor-errors"
+        },
         {
             "source_path_from_root": "/docs/csharp/misc/cs1714.md",
             "redirect_url": "/dotnet/csharp/language-reference/compiler-messages/assembly-references"