fix(c_sharp): Improve highlights

queries/c_sharp/highlights.scm

@@ -3,9 +3,15 @@
 (method_declaration
   name: (identifier) @method)
 
+(local_function_statement
+  name: (identifier) @method)
+
 (method_declaration
   type: (identifier) @type)
 
+(local_function_statement
+  type: (identifier) @type)
+
 (interpolation) @none
 
 (invocation_expression
@@ -89,15 +95,47 @@
   name: (identifier) @type)
 (constructor_declaration
   name: (identifier) @constructor)
+(constructor_initializer [
+  "base" @constructor
+])
 
 (variable_declaration
   (identifier) @type)
 (object_creation_expression
   (identifier) @type)
 
-(generic_name
+; Generic Types.
+(type_of_expression
+  (generic_name
+    (identifier) @type))
+
+(type_argument_list
+  (generic_name
+    (identifier) @type))
+
+(base_list
+  (generic_name
+    (identifier) @type))
+
+(type_constraint
+  (generic_name
+    (identifier) @type))
+
+(object_creation_expression
+  (generic_name
+   (identifier) @type))
+
+(property_declaration
+  (generic_name
+    (identifier) @type))
+
+type: (generic_name
   (identifier) @type)
 
+; Generic Method invocation with generic type
+(invocation_expression
+  function: (generic_name) @method)
+
 (invocation_expression
   (member_access_expression
     (generic_name
@@ -121,6 +159,23 @@
 (for_each_statement
   type: (identifier) @type)
 
+(tuple_element
+  type: (identifier) @type)
+
+(tuple_expression
+  (argument
+    (declaration_expression
+      type: (identifier) @type)))
+
+(as_expression
+  right: (identifier) @type)
+
+(type_of_expression
+  (identifier) @type)
+
+(name_colon
+  (identifier) @parameter)
+
 (warning_directive) @text.warning
 (error_directive) @exception
 
@@ -167,7 +222,6 @@
  "for"
  "do"
  "continue"
- "in"
  "goto"
  "foreach"
 ] @repeat
@@ -249,10 +303,12 @@
  "with"
  "new"
  "typeof"
+ "nameof"
  "sizeof"
  "ref"
  "is"
  "as"
+ "out"
 ] @keyword.operator
 
 [
@@ -268,6 +324,7 @@
  "private"
  "protected"
  "public"
+ "partial"
  "readonly"
  "sealed"
  "static"
@@ -284,10 +341,23 @@
  "get"
  "set"
  "where"
+ "in"
 ] @keyword
 
+(parameter_modifier "this" @keyword)
+
+(query_expression
+  (_ [
+    "from"
+    "orderby"
+    "select"
+    "group"
+    "by"
+    "ascending"
+    "descending"
+  ] @keyword))
+
 [
   "return"
   "yield"
 ] @keyword.return
-