[Eventhubs] Updated perf tests (Azure#24945)

* Events processing perf tests

* Removed T1 tests

* Updated EH perf tests

* Added uamqp system test

* Added cspell words

* Idempotent event preload

* Moved uamqp test to EH

* Preload across all partitions.

Author: annatisch

.vscode/cspell.json

@@ -127,6 +127,7 @@
     "adls",
     "aiohttp",
     "amqp",
+    "amqps",
     "apim",
     "Asal",
     "asyncio",
@@ -189,6 +190,7 @@
     "hmac",
     "hnstestscope",
     "howto",
+    "httpx",
     "illumos",
     "imds",
     "inotify",
@@ -252,6 +254,7 @@
     "PCREDENTIAL",
     "perfmon",
     "perfstress",
+    "perfstressdebug",
     "personalizer",
     "pkce",
     "pkey",
@@ -296,6 +299,7 @@
     "southcentralus",
     "ssis",
     "substringof",
+    "systemperf",
     "tenvparallel",
     "Teradata",
     "timegm",