Rework and consolidate issue templates (#43403)

We’re reworking our triage process and in doing so, reworking our issue
templates is worth looking into. We have multiple issue templates, for
arbitrary categories, and not enough enforcement. The plan is to
consolidate the issue templates (maybe all into one) and drop the
others.

Release Notes:

- N/A

.github/ISSUE_TEMPLATE/10_bug_report.yml

@@ -1,75 +0,0 @@
-name: Bug Report (Other)
-description: |
-  Something else is broken in Zed (exclude crashing).
-type: "Bug"
-body:
-  - type: textarea
-    attributes:
-      label: Summary
-      description: Provide a one sentence summary and detailed reproduction steps
-      value: |
-        <!-- Begin your issue with a one sentence summary -->
-        SUMMARY_SENTENCE_HERE
-
-        ### Description
-        <!--  Describe with sufficient detail to reproduce from a clean Zed install.
-          - Any code must be sufficient to reproduce (include context!)
-          - Include code as text, not just as a screenshot.
-          - Issues with insufficient detail may be summarily closed.
-        -->
-
-        DESCRIPTION_HERE
-
-        Steps to reproduce:
-        1.
-        2.
-        3.
-        4.
-
-        **Expected Behavior**:
-        **Actual Behavior**:
-
-        <!-- Before Submitting, did you:
-          1. Include settings.json, keymap.json, .editorconfig if relevant?
-          2. Check your Zed.log for relevant errors? (please include!)
-          3. Click Preview to ensure everything looks right?
-          4. Hide videos, large images and logs in ``` inside collapsible blocks:
-
-        <details><summary>click to expand</summary>
-
-        ```json
-
-        ```
-        </details>
-        -->
-
-    validations:
-      required: true
-
-  - type: textarea
-    id: environment
-    attributes:
-      label: Zed Version and System Specs
-      description: |
-        Open Zed, from the command palette select "zed: copy system specs into clipboard"
-      placeholder: |
-        Output of "zed: copy system specs into clipboard"
-    validations:
-      required: true
-  - type: textarea
-    attributes:
-      label: If applicable, attach your `Zed.log` file to this issue.
-      description: |
-        From the command palette, run `zed: open log` to see the last 1000 lines.
-        Or run `zed: reveal log in file manager` to reveal the log file itself.
-      value: |
-        <details><summary>Zed.log</summary>
-
-        <!-- Paste your log inside the code block. -->
-        ```log
-
-        ```
-
-        </details>
-    validations:
-      required: false