Add Hermetiq to commercial remote execution services (and also to Bazel Product Partner page) (#28911)

## Summary

Adds [Hermetiq](https://www.hermetiq.io) to the list of commercial remote execution services on the community page.

Hermetiq provides:
- Managed remote cache and remote execution (hosted Buildbarn)
- Build analytics via Bazel BES integration
- Cache miss debugging with root cause analysis
- RBE cost tracking and infrastructure telemetry

## Changes

- Added Hermetiq entry to the Commercial section in `site/en/community/remote-execution-services.md`

Closes #28911.

PiperOrigin-RevId: 884439696
Change-Id: I36ddafd28b1dad045e1cb702a749cb727bfe73f3

Author: JakeNewfield

docs/community/remote-execution-services.mdx

@@ -26,4 +26,5 @@ Use the following services to run Bazel with remote execution:
       caching, and results UI.
     * [EngFlow Remote Execution](https://www.engflow.com) - Remote execution
       and remote caching service with Build and Test UI. Can be self-hosted or hosted.
+    * [Hermetiq](https://www.hermetiq.com){: .external} - Build analytics, managed remote cache and remote execution with cache miss debugging, RBE cost tracking, and infrastructure telemetry.
     * [NativeLink](https://github.com/TraceMachina/nativelink) - Remote build execution, caching, analytics, and simulation.

site/en/community/remote-execution-services.md

@@ -27,4 +27,5 @@ Use the following services to run Bazel with remote execution:
       caching, and results UI.
     * [EngFlow Remote Execution](https://www.engflow.com){: .external} - Remote execution
       and remote caching service with Build and Test UI. Can be self-hosted or hosted.
+    * [Hermetiq](https://www.hermetiq.com){: .external} - Build analytics, managed remote cache and remote execution with cache miss debugging, RBE cost tracking, and infrastructure telemetry.
     * [NativeLink](https://github.com/TraceMachina/nativelink){: .external} - Remote build execution, caching, analytics, and simulation.