feat(suite): Implement Suites (#1239)

* feat(suite): Implement Suites

Fixes #1230

* Update docs

* Fix variable alignment

* Prevent always-run endpoint from running if a context placeholder fails to resolve in the URL

* Return errors when a context placeholder path fails to resolve

* Add a couple of unit tests

* Add a couple of unit tests

* fix(ui): Update group count properly

Fixes #1233

* refactor: Pass down entire config instead of several sub-configs

* fix: Change default suite interval and timeout

* fix: Deprecate disable-monitoring-lock in favor of concurrency

* fix: Make sure there are no duplicate keys

* Refactor some code

* Update watchdog/watchdog.go

* Update web/app/src/components/StepDetailsModal.vue

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* chore: Remove useless log

* fix: Set default concurrency to 3 instead of 5

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

web/app/src/utils/format.js

@@ -0,0 +1,17 @@
+/**
+ * Formats a duration from nanoseconds to a human-readable string
+ * @param {number} duration - Duration in nanoseconds
+ * @returns {string} Formatted duration string (e.g., "123ms", "1.23s")
+ */
+export const formatDuration = (duration) => {
+  if (!duration && duration !== 0) return 'N/A'
+  
+  // Convert nanoseconds to milliseconds
+  const durationMs = duration / 1000000
+  
+  if (durationMs < 1000) {
+    return `${durationMs.toFixed(0)}ms`
+  } else {
+    return `${(durationMs / 1000).toFixed(2)}s`
+  }
+}