Use c-ts-common-statement-offset in java-ts-mode (bug#61142)

Use c-ts-common-statement-offset in java-ts-mode (bug#61142)

* lisp/progmodes/java-ts-mode.el (java-ts-mode--indent-rules): Add new
matchers to enable c-ts-common machinery.
(java-ts-mode): Add regexps.
* lisp/progmodes/c-ts-common.el (c-ts-common-statement-offset): Fix
typo in documentation and use the new if statement helpers.
(c-ts-common-if-statement-regexp): New defvar.
(c-ts-common-nestable-if-statement-p): New defvar.
(c-ts-common--fix-nestable-if-statement): New helper.
* test/lisp/progmodes/c-ts-mode-resources/indent.erts: Add test for
complicated bracket matching indentation.
* lisp/progmodes/c-ts-mode.el (c-ts-mode--indent-styles): Add indent
rules for bracketless statements.