feat: add powershell language

queries/powershell/indents.scm

@@ -0,0 +1,41 @@
+(function_statement
+  "}" @indent.branch) @indent.begin
+
+(param_block
+  [
+    "param"
+    "("
+    ")"
+  ] @indent.branch) @indent.begin
+
+(script_block_expression
+  "}" @indent.branch) @indent.begin
+
+(statement_block
+  "}" @indent.branch) @indent.begin
+
+(switch_body
+  "}" @indent.branch) @indent.begin
+
+(array_expression
+  ")" @indent.branch) @indent.begin
+
+(hash_literal_expression
+  "}" @indent.branch) @indent.begin
+
+(class_statement
+  "}" @indent.branch) @indent.begin
+
+(class_method_definition
+  "}" @indent.branch) @indent.begin
+
+[
+  "}"
+  ")"
+] @indent.end
+
+[
+  (comment)
+  (string_literal)
+  (ERROR)
+] @indent.auto