Update issue templates to make deprecation of exoplayer2 more obvious

PiperOrigin-RevId: 590175639
(cherry picked from commit 9781be5084acff73d1516245d3698115156a99fc)

.github/ISSUE_TEMPLATE/bug.yml

-name: Bug Report
-description: Report a bug in the ExoPlayer library
-labels: ["bug", "needs triage"]
+name: This project is deprecated
+description: |
+  Please file your issue in the
+  [Media3 issue tracker](https://github.com/androidx/media/issues/new?template=bug.yml)
+labels: ["won't fix: infeasible"]
 body:
 body:
 - type: markdown
 - type: markdown
   attributes:
   attributes:
     value: |
     value: |
-      **Please do not file new issues in this repository.**
+      **This project is deprecated. Please do not file new issues in this repository. They will be
+      closed with no response.**
 
 
       All new bugs should be filed in the
       All new bugs should be filed in the
       [Media3 issue tracker](https://github.com/androidx/media/issues/new?template=bug.yml).
       [Media3 issue tracker](https://github.com/androidx/media/issues/new?template=bug.yml).
 
 
       We will continue to update and reply to existing issues in this repository
       We will continue to update and reply to existing issues in this repository
       and will keep existing feature requests active.
       and will keep existing feature requests active.
-- type: textarea
+- type: checkboxes
   attributes:
   attributes:
-    label: Bug
-  validations:
-    required: true
+    label: This project is deprecated
+    options:
+      - label: |
+        I understand this project is deprecated and this issue will be closed with no
+        response.
+      required: true

.github/ISSUE_TEMPLATE/feature_request.md

----
-name: Feature request
-about: Issue template for a feature request.
-title: ''
-labels: enhancement, needs triage
-assignees: ''
----
-
-**Please do not file new issues in this repository.**
-
-All new feature requests should be filed in the
-[Media3 issue tracker](https://github.com/androidx/media/issues/new?template=feature_request.md).
-
-We will continue to update and reply to existing issues in this repository and
-will keep existing feature requests active.

.github/ISSUE_TEMPLATE/question.md

----
-name: Question
-about: Issue template for a question.
-title: ''
-labels: question, needs triage
-assignees: ''
----
-
-**Please do not file new issues in this repository.**
-
-All new questions should be filed in the
-[Media3 issue tracker](https://github.com/androidx/media/issues/new?template=question.md).
-
-We will continue to update and reply to existing issues in this repository and
-will keep existing feature requests active.