[CI-SKIP] 🚀 Upgrade to new form-based templates (#5278)

.github/ISSUE_TEMPLATE/performance-problem.yml

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+name: Performance Problem
+description: Report performance related problems or other areas of concern
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Before reporting performance problems here, please make sure you are on the latest version of Paper.
+        Forks of Paper receive no support here. If you are using a fork, please make sure that this problem also affects Paper.
+  - type: input
+    attributes:
+      label: Timings or Profile link
+      description: We ask that all timings/profiles are a link, not a screenshot. Screenshots inhibit our ability to figure out the real cause of the issue.
+      placeholder: "Example: https://timings.aikar.co/?id=6b48586fbbdd48e585ca0ebb07c59dd0"
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Description of issue
+      description: If applicable, please describe your issue.
+    validations:
+      required: false
+  - type: textarea
+    attributes:
+      label: Plugin list
+      description: All plugins running on the server.
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Server config files
+      description: We need bukkit.yml, spigot.yml, paper.yml, and server.properties. You can paste it below or use a paste site like https://paste.gg.
+      value: |
+        ```
+        Paste configs or paste.gg link here!
+        ```
+      placeholder: Please don't remove the backticks; it makes your issue a lot harder to read!
+    validations:
+      required: true
+  - type: textarea
+    attributes:
+      label: Paper version
+      description: |
+        Run `/version` on your server and **paste** the full, unmodified output here.
+        "latest" is *not* a version; we require the output of `/version` so we can adequately track down the issue.
+        Additionally, do NOT provide a screenshot, you MUST paste the entire output.
+        <details>
+        <summary>Example</summary>
+
+        ```
+        > version
+        [20:34:42 INFO]: This server is running Paper version git-Paper-540 (MC: 1.16.5) (Implementing API version 1.16.5-R0.1-SNAPSHOT)
+        [20:34:42 INFO]: Checking version, please wait...
+        [20:34:42 INFO]: Previous version: git-Paper-538 (MC: 1.16.5)
+        [20:34:42 INFO]: You are running the latest version
+        ```
+
+        </details>
+    validations:
+      required: false
+
+  - type: checkboxes
+    attributes:
+      label: Agreements
+      description: Please agree to the following.
+      options:
+        - label: I am running the latest version of Paper available from https://papermc.io/downloads.
+          required: true
+        - label: I have searched for and ensured there isn't already an open issue regarding this.
+          required: true
+        - label: My version of Minecraft is supported by Paper.
+          required: true
+
+  - type: markdown
+    attributes:
+      value: |
+        Please include other helpful links below.
+        The more information we receive, the quicker and more effective we can be at finding the solution to the issue.