Added Development-Cycle page

Development-Cycle.md

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+This page describes the mechanics of a NetBox development cycle.
+It is a work in progress and always will be.
+
+# Ceremonies
+The core team meets in a daily standup. Whenever possible, the following ceremonies are fit into that 30-minute slot.
+
+## Main Standup
+Each team member answers three questions:
+- What did I work on previously?
+- What will I work on today?
+- Is anything blocking my work?
+
+## Backlog Review
+On the first day of a new cycle, the team conducts a backlog review.
+The purpose of this ceremony is to select issues from the cycle backlog for work during the new cycle.
+
+Each issue in the cycle backlog goes through a process that subjects it to one of four fates:
+- Remain in the cycle backlog
+- Regress from cycle backlog to product backlog
+- Assign and promote to Todo
+- Break down into smaller issues
+
+In chart form:
+```mermaid
+flowchart TD
+    A[🎬
+    Start] -->B{✋
+        Any Takers?}
+    B -->|Yes| D{🤔
+    Achievable
+    in 1 Cycle?}
+    B -->|No| E{🤔
+    Still a Fit
+    for Milestone?}
+    E -->|Yes| H[🏁
+    Keep in
+    Cycle Backlog]
+    E -->|No| I[🏁
+    Remove to
+    Product Backlog]
+    D -->|Yes| J[🧑‍💻
+    Assign]
+    J --> F[🏁
+     Promote to Todo]
+    D -->|No| G[🧩
+    Break Down
+    into Smaller Issues]
+    G -->B
+```
+
+## Retrospective
+At the end of a cycle, the team may opt to hold a lightweight retrospective in which the team collaboratively answers the following:
+- What worked well this cycle?
+- What could have worked better?
+- What should we change going forward?