Add issue template for pattern draft (#483)

.github/ISSUE_TEMPLATE/pattern-draft.md

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+---
+name: Pattern Draft
+about: Suggest a new Pattern
+title: "[Pattern Draft]"
+labels: 1-initial, Type - Content Work
+assignees: ''
+
+---
+
+This is the most basic template for a new pattern.
+See our full pattern syntax [here](https://github.com/InnerSourceCommons/InnerSourcePatterns/blob/main/meta/pattern-template.md).
+
+## Title
+
+Short Title Here
+
+## Patlet / Summary
+
+Concise 1-2 sentence description of the problem and solution.
+
+## Problem
+
+What is the problem - crisp definition of the problem.
+Short description, usually not more than a couple sentences, that describes what the issues and challenges are.
+Be careful not to morph into information found in other sections below.
+
+## Context
+
+Where does the problem exist?
+What are the pre-conditions?
+**Unchangeable** before the solution goes into place.
+The content here is often tied to the applicability of the pattern for other readers: "Do I have this same particular situation?"
+
+## Forces
+
+What makes the problem difficult?
+What are the trade-offs?
+These are constraints that **can be changed** at a cost.
+The solution might change one or more of these forces in order to solve the problem, while also in-turn changing the context.
+
+## Solutions
+
+Verified resolutions and possible resolutions to the problem.
+
+## Resulting Context
+
+What is the situation after the problem has been solved?
+The original context is changed indirectly by way of the solution.
+Often this section can include discussion of the next possible Patterns/problems introduced.
+This section can be short in content - the solution may not introduce new problems or change much context.
+
+## Known Instances (optional)
+
+Where has this been seen before?
+Helps to reinforce that this is a REAL pattern and that you match the context.
+
+May mention:
+
+* A particular business
+* Anonymized instances ex: "3 companies have proven that this is a good solution" or "A large financial services org...".
+
+## Status 
+
+Initial
+
+## Author(s) (optional)
+
+Often, this is yourself.
+If you need to, find someone in the InnerSource Commons to be the nominal author (As Told To).
+Could also be no-one if you do not want to take on authorship (common with a donut looking for a solution).