Update index.md (CI/CD) split out tools into individual docs (#30315)

* Update index.md (CI/CD) split out tools into individual docs

* Create daily_fail_summary.md

* Update index.md

* Update daily_fail_summary.md

* Update index.md

* Update index.md

* Update index.md

docs/ci-cd/index.md

@@ -1,45 +1,21 @@
 # CI/CD Documentation
 
+```{toctree}
+:glob:
+
+tools/*
+```
+
 ## Known Issues
 
 -   Python build running out of space
 
 ## Tools
 
-### Daily Fail Summary
-
-#### Source
-
-Workflow:
-https://github.com/project-chip/connectedhomeip/blob/master/.github/workflows/recent_fail_summary.yaml
-
-Script:
-https://github.com/project-chip/connectedhomeip/blob/master/scripts/tools/summarize_fail.py
-
-Fail Definitions:
-https://github.com/project-chip/connectedhomeip/blob/master/scripts/tools/build_fail_definitions.yaml
-
-#### Summary
-
-Runs once per day; takes inventory of the previous day's workflow runs and
-parses them for fail statistics. Creates temporarily cached artifacts for easy
-data parsing. Also saves a daily pass percentage list of all workflows at
-https://github.com/project-chip/connectedhomeip/blob/daily_pass_percentage/docs/daily_pass_percentage.md.
-Fail definitions can be added to the file defined above to allow fast root cause
-determination of any fail with an error message.
-
-#### Improvement Ideas
-
--   Keep fail signature list updated to track causes of all common fails
--   Make script artifact more known and accessible so it can be easily shared
-    and used by everyone
--   Deliver daily fail summaries in short form through a Slack bot for easy
-    access
+-   [Daily Fail Summary](tools/daily_fail_summary.md)
 
 ## To Do
 
 -   Cert image auto build
--   Include Darwin Test fail definitions in fail summary script - for starters,
-    Test Reliable Message Protocol
 
 ## General Improvement Ideas

docs/ci-cd/tools/daily_fail_summary.md

@@ -0,0 +1,34 @@
+### Daily Fail Summary
+
+#### Source
+
+Workflow:
+https://github.com/project-chip/connectedhomeip/blob/master/.github/workflows/recent_fail_summary.yaml
+
+Script:
+https://github.com/project-chip/connectedhomeip/blob/master/scripts/tools/summarize_fail.py
+
+Fail Definitions:
+https://github.com/project-chip/connectedhomeip/blob/master/scripts/tools/build_fail_definitions.yaml
+
+#### Summary
+
+Runs once per day; takes inventory of the previous day's workflow runs and
+parses them for fail statistics. Creates temporarily cached artifacts for easy
+data parsing. Also saves a daily pass percentage list of all workflows at
+https://github.com/project-chip/connectedhomeip/blob/daily_pass_percentage/docs/daily_pass_percentage.md.
+Fail definitions can be added to the file defined above to allow fast root cause
+determination of any fail with an error message.
+
+#### To Do
+
+-   Keep fail signature list updated to track causes of all common fails
+-   Include Darwin Test fail definitions in fail summary script - for starters,
+    Test Reliable Message Protocol
+
+#### Improvement Ideas
+
+-   Make script artifact more known and accessible so it can be easily shared
+    and used by everyone
+-   Deliver daily fail summaries in short form through a Slack bot for easy
+    access