Add links to removed obsolete sample projects. (#1474)

I found it quite frustrating to be reading / watching training content
that made reference to the Jetsurvey project in this repo only to find
it no longer exists. I imagine this would be even more frustating for
those going through learning materials alongside learning git.

README.md

@@ -89,6 +89,19 @@ To update dependencies to their new stable versions, run:
 
 To make any other manual updates to dependencies (ie add a new dependency or set an alpha version), update the `/scripts/libs.versions.toml` file with changes, and then run `duplicate_version_config.sh` to propogate the changes to all other samples. You can also update the  `toml-updater-config.gradle` file with changes that need to propogate to each sample. 
 
+## Obsolete Sample Projects
+
+Over time some of our samples become a little stale and are removed to keep the
+repository easy to navigate. If you are curious you can still find them in the 
+history, however if you are new you might be better served sticking to
+the most up to date resources.
+
+| Project                                          | Removed    | Commit                                                              |
+| ------------------------------------------------ | -----------|-------------------------------------------------------------------- |
+| [Crane](../../../tree/v2024.05.00/Crane)         | 2024-08-02 | [ee8e272](../../../commit/ee8e27289f4bc36304ee9f04397f49c35f402a65) |
+| [Owl](../../../tree/v2024.05.00/Owl)             | 2024-08-02 | [ee8e272](../../../commit/ee8e27289f4bc36304ee9f04397f49c35f402a65) |
+| [Jetsurvey](../../../tree/v2024.05.00/Jetsurvey) | 2024-08-02 | [ee8e272](../../../commit/ee8e27289f4bc36304ee9f04397f49c35f402a65) |
+| [Rally](../../../tree/v2024.05.00/Rally)         | 2024-08-02 | [ee8e272](../../../commit/ee8e27289f4bc36304ee9f04397f49c35f402a65) |
 
 ## License
 ```