add playdate topics

topics/playdate-sdk/index.md

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+---
+topic: playdate-sdk
+aliases: panic-playdate-sdk
+related: sdk, game-development
+created_by: Panic
+display_name: Panic Playdate SDK
+short_description: Playdate SDK by Panic for Lua and C programming languages.
+released: February 28, 2022
+logo: playdate-sdk.png
+url: https://play.date/dev/#cardSDK
+wikipedia_url: https://en.wikipedia.org/wiki/Playdate_(console)#Developers
+---
+Freely available Software Development Kit for Playdate handheld video game console by Panic.
+Contains API for Lua and C programming languages, documentation, examples and simulator.
+
+SDK documentation:
+- [general & Lua](https://sdk.play.date/)
+- [specifically for C](https://sdk.play.date/Inside%20Playdate%20with%20C.html).
+- [changelog](https://sdk.play.date/changelog/)

topics/playdate/index.md

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+---
+topic: playdate
+aliases: panic-playdate, playdate-console
+related: game-development
+created_by: Panic
+display_name: Panic Playdate
+short_description: Playdate by Panic is a handheld video game console, with free SDK and sideloading.
+released: 2022
+logo: playdate.png
+url: https://play.date/
+wikipedia_url: https://en.wikipedia.org/wiki/Playdate_(console)
+---
+Playdate is a handheld video game console developed by Panic.
+The device features a mechanical crank and a 1bit black-and-white screen that operating like e-paper but can produce up to 60 FPS.
+Official SDK is openly available, supports C, C++ and Lua languages and includes simulator.
+Games are created using SDK can be freely sideloaded to the device.