Add bitstring indentation and navigation for elixir-ts-mode

* lisp/progmodes/elixir-ts-mode.el
(elixir-ts--sexp-regexp): Add bistring.
(elixir-ts--indent-rules): Handle bitstring indentation.
(Bug#63109)

* test/lisp/progmodes/elixir-ts-mode-resources/indent.erts:
Add test case.

lisp/progmodes/elixir-ts-mode.el

@@ -89,7 +89,7 @@
   (rx bol
       (or "call" "stab_clause" "binary_operator" "list" "tuple" "map" "pair"
           "sigil" "string" "atom" "alias" "arguments" "identifier"
-          "boolean" "quoted_content")
+          "boolean" "quoted_content" "bitstring")
       eol))
 
 (defconst elixir-ts--test-definition-keywords
@@ -231,6 +231,7 @@
        ((node-is "^]$") ,'elixir-ts--parent-expression-start 0)
        ((node-is "^}$") ,'elixir-ts--parent-expression-start 0)
        ((node-is "^)$") ,'elixir-ts--parent-expression-start 0)
+       ((node-is "^>>$") ,'elixir-ts--parent-expression-start 0)
        ((node-is "^else_block$") grand-parent 0)
        ((node-is "^catch_block$") grand-parent 0)
        ((node-is "^rescue_block$") grand-parent 0)
@@ -250,6 +251,7 @@
         ,'elixir-ts--argument-indent-anchor
         ,'elixir-ts--argument-indent-offset)
        ((parent-is "^pair$") parent ,offset)
+       ((parent-is "^bitstring$") parent ,offset)
        ((parent-is "^map_content$") parent-bol 0)
        ((parent-is "^map$") ,'elixir-ts--parent-expression-start ,offset)
        ((node-is "^stab_clause$") parent-bol ,offset)

test/lisp/progmodes/elixir-ts-mode-resources/indent.erts

@@ -79,6 +79,18 @@ def foo() do
 end
 =-=-=
 
+Name: Bitstring mulitline
+
+=-=
+<<12, 22,
+22, 32
+    >>
+=-=
+<<12, 22,
+  22, 32
+>>
+=-=-=
+
 Name: Block assignments
 
 =-=