feat: add Kos parser

Add parser, queries and tests for the Kos programming language.

runtime/queries/kos/locals.scm

@@ -0,0 +1,41 @@
+; Scopes
+;-------
+(compound_statement) @local.scope
+
+(for_statement) @local.scope
+
+(function_decl) @local.scope
+
+(constructor_literal) @local.scope
+
+(function_literal) @local.scope
+
+(with_statement) @local.scope
+
+(catch_clause) @local.scope
+
+; Definitions
+;------------
+(variable_decl
+  variable: (identifier) @local.definition.var)
+
+(parameter
+  parameter: (identifier) @local.definition.var)
+
+(import
+  module: (identifier) @local.definition.import)
+
+(import
+  symbol: (identifier) @local.definition.import)
+
+(function_decl
+  name: (identifier) @local.definition.function
+  (#set! definition.var.scope parent))
+
+(class_decl
+  name: (identifier) @local.definition.class
+  (#set! definition.var.scope parent))
+
+; References
+;------------
+(identifier) @local.reference