feat: add indents for annotation defs (#4828)

- Add indent for `@interface` and `@Annotation(...)`
- Add notes for indent queries

queries/java/indents.scm

@@ -1,13 +1,17 @@
 [
-  (class_body)
-  (enum_body)
-  (interface_body)
-  (constructor_body)
-  (block)
-  (switch_block)
-  (array_initializer)
-  (argument_list)
-  (formal_parameters)
+  ; ... refers to the portion that this indent query will have effects on
+  (class_body)                        ; { ... } of `class X`
+  (enum_body)                         ; { ... } of `enum X`
+  (interface_body)                    ; { ... } of `interface X`
+  (constructor_body)                  ; { `modifier` X() {...} } inside `class X`
+  (annotation_type_body)              ; { ... } of `@interface X`
+  (block)                             ; { ... } that's not mentioned in this scope
+  (switch_block)                      ; { ... } in `switch X`
+  (array_initializer)                 ; [1, 2]
+  (argument_list)                     ; foo(...)
+  (formal_parameters)                 ; method foo(...)
+  (annotation_argument_list)          ; @Annotation(...)
+  (element_value_array_initializer)   ; { a, b } inside @Annotation()
 ] @indent.begin
 
 (expression_statement (method_invocation) @indent.begin)
@@ -21,6 +25,7 @@
   "]"
 ] @indent.branch
 
+(annotation_argument_list ")" @indent.end) ; This should be a special cased as `()` here doesn't have ending `;`
 "}" @indent.end
 
 (line_comment) @indent.ignore

tests/indent/java/annotation.java

@@ -0,0 +1,3 @@
+abstract public @interface Foo {
+  abstract public String Bar();
+}

tests/indent/java/annotation_2.java

@@ -0,0 +1,8 @@
+@ContextConfiguration(
+  classes = {
+    WireMockConfig.class,
+  }
+)
+public class Foo {
+
+}

tests/indent/java_spec.lua

@@ -33,5 +33,7 @@ describe("indent Java:", function()
     run:new_line("method_chaining.java", { on_line = 4, text = '.append("b");', indent = 6 })
     run:new_line("constructor_with_arguments_on_multiple_lines.java", { on_line = 4, text = "}", indent = 2 })
     run:new_line("method_with_arguments_on_multiple_lines.java", { on_line = 4, text = "}", indent = 2 })
+    run:new_line("annotation.java", { on_line = 1, text = "abstract public Foo(){}", indent = 2 })
+    run:new_line("annotation_2.java", { on_line = 2, text = "Bar.class", indent = 4 })
   end)
 end)