DRA: add admin controlled device attributes + device taints

These are two different KEPs that provide two features that can be enabled and
disabled independently. However, both use the same new ResourceSliceOverride
type and thus get described and implemented together.

Author: pohly

keps/prod-readiness/sig-scheduling/5027.yaml

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+# The KEP must have an approver from the
+# "prod-readiness-approvers" group
+# of http://git.k8s.io/enhancements/OWNERS_ALIASES
+kep-number: 5027
+alpha:
+  approver: "@soltysh"

keps/prod-readiness/sig-scheduling/5055.yaml

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+# The KEP must have an approver from the
+# "prod-readiness-approvers" group
+# of http://git.k8s.io/enhancements/OWNERS_ALIASES
+kep-number: 5055
+alpha:
+  approver: "@soltysh"

keps/sig-scheduling/5027-dra-admin-controlled-device-attributes/README.md

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+title: "DRA: admin-controlled device attributes"
+kep-number: 5027
+authors:
+  - "@pohly"
+owning-sig: sig-scheduling
+status: implementable
+creation-date: 2024-01-10
+reviewers:
+  - "@dom4ha"
+approvers:
+  - "@alculquicondor"
+
+see-also:
+  - "/keps/sig-node/4381-dra-structured-parameters"
+
+# The target maturity stage in the current dev cycle for this KEP.
+stage: alpha
+
+# The most recent milestone for which work toward delivery of this KEP has been
+# done. This can be the current (upcoming) milestone, if it is being actively
+# worked on.
+latest-milestone: "v1.33"
+
+# The milestone at which this feature was, or is targeted to be, at each stage.
+milestone:
+  alpha: "v1.33"
+
+# The following PRR answers are required at alpha release
+# List the feature gate name and the components for which it must be enabled
+feature-gates:
+  - name: DRAAdminControlledDeviceAttributes
+    components:
+      - kube-apiserver
+      - kube-scheduler
+disable-supported: true
+
+# The following PRR answers are required at beta release
+metrics:

keps/sig-scheduling/5027-dra-admin-controlled-device-attributes/kep.yaml

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+title: "DRA: device taints and tolerations"
+kep-number: 5055
+authors:
+  - "@pohly"
+  - "@everpeace"
+owning-sig: sig-scheduling
+status: implementable
+creation-date: 2025-01-20
+reviewers:
+  - "@dom4ha"
+approvers:
+  - "@alculquicondor"
+
+see-also:
+  - "/keps/sig-node/5027-dra-admin-controlled-device-attributes"
+
+# The target maturity stage in the current dev cycle for this KEP.
+stage: alpha
+
+# The most recent milestone for which work toward delivery of this KEP has been
+# done. This can be the current (upcoming) milestone, if it is being actively
+# worked on.
+latest-milestone: "v1.33"
+
+# The milestone at which this feature was, or is targeted to be, at each stage.
+milestone:
+  alpha: "v1.33"
+
+# The following PRR answers are required at alpha release
+# List the feature gate name and the components for which it must be enabled
+feature-gates:
+  - name: DRADeviceTaints
+    components:
+      - kube-apiserver
+      - kube-scheduler
+      - kube-controller-manager
+disable-supported: true
+
+# The following PRR answers are required at beta release
+metrics: