feat: Convert restructuredtext based template to markdown

As described in [RFC 0043] we want to improve the RFC writing process by
converting the rst-based RFC template to markdown.

[RFC 0043]: https://rfc.archlinux.page/0043-streamline-the-rfc-writing-process/



Signed-off-by: David Runge <dvzrv@archlinux.org>

README.rst

@@ -85,7 +85,7 @@ Fork this repository if you have not already.
 Step 2: Write RFC
 _________________
 
-Copy **rfcs/0000-template.rst** to **rfcs/0000-<my-proposal-title>.rst** and begin
+Copy **rfcs/0000-template.md** to **rfcs/0000-<my-proposal-title>.md** and begin
 working on the RFC.
 
 Please put a lot of thought into your writing. A great RFC explains and
@@ -109,8 +109,8 @@ comments of the merge request.
 After the merge request is created, the merge request number (e.g. 42) is your RFC
 number. Then do the following:
 
-1. In the branch, rename the file from **rfcs/0000-<my-proposal-title>.rst** to
-   **rfcs/0042-<my-proposal-title>.rst**. This makes all the proposals show up
+1. In the branch, rename the file from **rfcs/0000-<my-proposal-title>.md** to
+   **rfcs/0042-<my-proposal-title>.md**. This makes all the proposals show up
    in ascending chronological order when someone visits the `rfcs <rfcs/>`_
    directory.
 2. In the file itself, there is a bullet point labeled **RFC MR:**. Update this

rfcs/0000-template.rst → rfcs/0000-template.md

@@ -3,53 +3,42 @@ title: "Template"
 draft: true
 ---
 
-=====
-Title
-=====
+# Title
 
 - Date proposed: yyyy-mm-dd
 - RFC MR: https://gitlab.archlinux.org/archlinux/rfcs/-/merge_requests/0000
   **update this number after RFC merge request has been filed**
 
-Summary
--------
+## Summary
 
 Short description, 1-2 sentences.
 
-Motivation
-----------
+## Motivation
 
-Introduce the topic. If this is a not-well-known section of Arch Linux, a
-detailed explanation of the background is recommended.
+Introduce the topic.
+If this is a not-well-known section of Arch Linux, a detailed explanation of the background is recommended.
 
 Some example points of discussion:
 
 - What specific problems are you facing right now that you're trying to address?
-- Are there any previous discussions? Link to them and summarize them (don't
-  force your readers to read them though!).
+- Are there any previous discussions? Link to them and summarize them (don't force your readers to read them though!).
 - Is there any precedent set by other software? If so, link to resources.
 
-Specification
--------------
+## Specification
 
 A concrete, thorough explanation of what is being planned.
 
-Drawbacks
----------
+## Drawbacks
 
-Carefully consider every possible objection and issue with your proposal. This
-section should be updated as feedback comes in from discussion.
+Carefully consider every possible objection and issue with your proposal.
+This section should be updated as feedback comes in from discussion.
 
-Unresolved Questions
---------------------
+## Unresolved Questions
 
-Are there any portions of your proposal which need to be discussed with the
-community before the RFC can proceed? Be careful here -- an RFC with a lot of
-remaining questions is likely to be stalled. If your RFC is mostly unresolved
-questions and not too much substance, it may not be ready.
+Are there any portions of your proposal which need to be discussed with the community before the RFC can proceed?
+Be careful here -- an RFC with a lot of remaining questions is likely to be stalled.
+If your RFC is mostly unresolved questions and not too much substance, it may not be ready.
 
-Alternatives Considered
------------------------
+## Alternatives Considered
 
-A list of alternatives, that have been considered and offer equal or similar
-features to the proposed change.
+A list of alternatives, that have been considered and offer equal or similar features to the proposed change.