feat: Add design template

Signed-off-by: Mateus Oliveira <[email protected]>

docs/design/template.md

@@ -0,0 +1,53 @@
+# Design proposal template `<replace with your proposal's title>`
+
+_Note_: The preferred style for design documents is one sentence per line.
+*Do not wrap lines*.
+This aids in review of the document as changes to a line are not obscured by the reflowing those changes caused and has a side effect of avoiding debate about one or two space after a period.
+
+_Note_: The name of the file should follow the name pattern `<short meaningful words joined by '-'>_design.md`, e.g:
+`listener-design.md`.
+
+## Abstract
+One to two sentences that describes the goal of this proposal and the problem being solved by the proposed change.
+The reader should be able to tell by the title, and the opening paragraph, if this document is relevant to them.
+
+## Background
+One to two paragraphs of exposition to set the context for this proposal.
+
+## Goals
+- A short list of things which will be accomplished by implementing this proposal.
+- Two things is ok.
+- Three is pushing it.
+- More than three goals suggests that the proposal's scope is too large.
+
+## Non Goals
+- A short list of items which are:
+- a. out of scope
+- b. follow on items which are deliberately excluded from this proposal.
+
+
+## High-Level Design
+One to two paragraphs that describe the high level changes that will be made to implement this proposal.
+
+## Detailed Design
+A detailed design describing how the changes to the product should be made.
+
+The names of types, fields, interfaces, and methods should be agreed on here, not debated in code review.
+The same applies to changes in CRDs, YAML examples, and so on.
+
+Ideally the changes should be made in sequence so that the work required to implement this design can be done incrementally, possibly in parallel.
+
+## Alternatives Considered
+If there are alternative high level or detailed designs that were not pursued they should be called out here with a brief explanation of why they were not pursued.
+
+## Security Considerations
+If this proposal has an impact to the security of the product, its users, or data stored or transmitted via the product, they must be addressed here.
+
+## Compatibility
+A discussion of any compatibility issues that need to be considered
+
+## Implementation
+A description of the implementation, timelines, and any resources that have agreed to contribute.
+
+## Open Issues
+A discussion of issues relating to this proposal for which the author does not know the solution. This section may be omitted if there are none.