Add Bash indents (#5149)

book/src/generated/lang-support.md

@@ -2,7 +2,7 @@
 | --- | --- | --- | --- | --- |
 | astro | ✓ |  |  |  |
 | awk | ✓ | ✓ |  | `awk-language-server` |
-| bash | ✓ |  |  | `bash-language-server` |
+| bash | ✓ |  | ✓ | `bash-language-server` |
 | bass | ✓ |  |  | `bass` |
 | beancount | ✓ |  |  |  |
 | bibtex | ✓ |  |  | `texlab` |

runtime/queries/bash/indents.scm

@@ -0,0 +1,11 @@
+[
+  (function_definition)
+  (if_statement)
+  (for_statement)
+  (case_statement)
+  (pipeline)
+] @indent
+
+[
+  "}"
+] @outdent