…the same as drupal 10 though I think

* use drush URI as an env var instead of drush.ymal
* rmove the yaml generator
* remove dependency on config-reader, unpack PLATFORM_RELATIONSHIPS directly in PHP instead
* Remove the drush mounts
* Adjusted drupal static files expiry date
* renamed the redis cache relationship to 'cache' not 'redis' to match how the 'sql' relationship is actually called 'database'
* Removed Drupal specific magic environment variable injection. it's cute but never seen it used in practice

Squashed commit of the following:

commit 7765112
Author: dman <dman@coders.co.nz>
Date:   Thu Aug 7 14:33:15 2025 +0700

    caps matter - typo

commit fafd4c3
Author: dman <dman@coders.co.nz>
Date:   Thu Aug 7 14:24:20 2025 +0700

    DOn't need generate-yaml script any more. Set static file cache expiry much longer

commit 3ecb436
Author: dman <dman@coders.co.nz>
Date:   Thu Aug 7 14:16:52 2025 +0700

    Remove unneccessary drush mounts

commit 57b62e2
Author: dman <dman@coders.co.nz>
Date:   Wed Aug 6 17:24:58 2025 +0700

    D11 requires PHP 8.3+

commit 0056f32
Merge: 719d63d 7f54965
Author: dman <dman@coders.co.nz>
Date:   Wed Aug 6 17:20:38 2025 +0700

    reducing dependencies

commit 7f54965
Author: dman <dman@coders.co.nz>
Date:   Wed Aug 6 17:10:48 2025 +0700

    drupal11 specific config.yaml update

commit 1d33981
Author: dman <dman@coders.co.nz>
Date:   Wed Aug 6 16:42:48 2025 +0700

    rename redis relationship to cache - to align with docs better

commit 33a31d8
Author: dman <dman@coders.co.nz>
Date:   Wed Aug 6 16:03:03 2025 +0700

    remove dependency on magic env vars

commit 625e857
Author: dman <dman@coders.co.nz>
Date:   Wed Aug 6 15:58:38 2025 +0700

    rename redis relationship to cache - to conform with docs examples better

commit a0532f9
Author: dman <dman@coders.co.nz>
Date:   Wed Aug 6 15:42:17 2025 +0700

    remove traces of generate_drush_yml

commit 59f6a3a
Author: dman <dman@coders.co.nz>
Date:   Wed Aug 6 15:36:55 2025 +0700

    Remove requirement and usages of platformsh/configreader

commit 7380cea
Author: dman <dman@coders.co.nz>
Date:   Wed Aug 6 12:33:37 2025 +0700

    transfer drush URI setting in to an env var, and remove drush.yml and yml generator. discard redundant drush-specific mounts.

commit 8948935
Author: Dan Morrison <dman@coders.co.nz>
Date:   Mon Jan 27 14:06:22 2025 +0700

    ddev homeadditions to make project detection easier - pre-configure the PLATFORM_PROJECT so that ddev pull will work OOTB

commit 07f125d
Author: Dan Morrison <dman@coders.co.nz>
Date:   Mon Jan 27 11:34:43 2025 +0700

    code formatting

commit 577c0bc
Merge: dc834a5 a100a0f
Author: Dan Morrison <dan@coders.co.nz>
Date:   Tue May 13 18:03:15 2025 +0700

    Merge pull request #3 from upsun/issue-1-remove-ddev-scaffolding

    Fixes #1 : Remove ddev initialization

commit a100a0f
Author: Dan Morrison <dman@coders.co.nz>
Date:   Tue May 13 17:58:27 2025 +0700

    Fixes #1 : Remove ddev initialization, as that's best done by ddev itself and sometimes changes its syntax. Don't assume or provide DDEV support

commit dc834a5
Author: Dan Morrison <dman@coders.co.nz>
Date:   Thu Jan 16 17:42:15 2025 +0700

    Explain versioning strategy