[llvm] [ctx_prof] test tool: generate ctxprof bistream from json (PR #100379)

[Teresa Johnson via llvm-commits]

================
@@ -0,0 +1,29 @@
+[
+  {
+    "Guid": 1000,
+    "Counters": [1, 2, 3],
+    "Callsites": [
+      [],
+      [
+        {
+          "Guid": 2000,
+          "Counters": [4, 5]
+        },
+        {
+          "Guid": 18446744073709551613,
+          "Counters": [6, 7, 8]
+        }
+    ], 
----------------
teresajohnson wrote:

Nit, can you align the matching brackets?

https://github.com/llvm/llvm-project/pull/100379