go loop and func literal, rust textobject support

queries/rust/textobjects.scm

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+;; functions
+(function_item
+  (_) @function.inner) @function.outer
+
+;; quantifies as class(es)
+(struct_item
+  (_) @class.inner) @class.outer
+
+(enum_item
+  (_) @class.inner) @class.outer
+
+(union_item
+  (_) @class.inner) @class.outer
+
+(trait_item
+  (_) @class.inner) @class.outer
+
+(impl_item
+  (_) @class.inner) @class.outer
+
+;; conditionals
+(if_expression
+  alternative: (_ (_)? @conditional.inner)?
+  ) @conditional.outer
+
+(if_expression
+  alternative: (block)? @conditional.inner)
+
+(if_expression
+  condition: (_) @conditional.inner)
+
+(if_expression
+  consequence: (block)? @conditional.inner)
+
+(match_arm
+  (_)) @conditional.inner
+
+(match_expression
+  (match_arm)?
+  ) @conditional.outer
+
+(if_let_expression
+  consequence: (block)?
+  @conditional.inner) @conditional.outer
+
+(if_let_expression
+  alternative: (block)? @conditional.inner)
+
+(if_let_expression
+  condition: (_) @conditional.inner)
+
+;; loops
+(loop_expression
+  (_)? @loop.inner) @loop.outer
+
+(while_expression
+  (_)? @loop.inner) @loop.outer
+
+(while_let_expression
+  (_)? @loop.inner) @loop.outer
+
+(for_expression
+  body: (block)? @loop.inner) @loop.outer
+
+;; blocks
+(_ (block) @block.inner) @block.outer
+(unsafe_block (_)? @block.inner) @block.outer
+
+;; calls
+(call_expression (_)? @call.inner) @call.outer
+
+;; statements
+(block (_) @statement.outer)