Add core port request Issue template

.github/ISSUE_TEMPLATE/core_port_request.md

@@ -0,0 +1,33 @@
+---
+name: Core port request
+about: Request another emulator be ported into BizHawk
+title: '[Core Port Req.] (name of emulator, and systems emulated if it's not obvious)'
+labels: 'Core: Future core, Enhancement'
+assignees: ''
+
+---
+
+[//]: # "This description supports Markdown syntax. There's a cheatsheet here: https://guides.github.com/features/mastering-markdown/"
+[//]: # "These lines are comments, for letting you know what you should be writing. You can delete them or leave them in."
+[//]: # "Also, please don't waste your time writing until you've checked for duplicate core requests, both on the issue tracker and on this Wiki page: https://github.com/TASEmulators/BizHawk/wiki/Core-Requests"
+
+### Upstream info
+- [Website](https://example.com)
+- Target platforms: (win/mac/tux)
+- [Source repo](https://github.com/group/repo)
+- Language(s): (programming language)
+- License: (license name/identifier)
+
+### Merits
+[//]: # "Briefly explain why this emulator is worth including in BizHawk. If it emulates the same system as an existing core, compare them."
+(explanation)
+
+### Technical details
+[//]: # "Non-exhaustive list of things to consider:"
+- (able to build .dll/.so for P/Invoke?)
+- (frontend/backend separation--for example, can backend be built without SDL?)
+- (can force single-threaded?)
+- (has I/O abstraction accepting byte array, or only accepts file paths? for disc-based consoles, can swap out implementation for BizHawk's?)
+- (savestate quality)
+
+[//]: # "Code speaks louder than words: If you're able to make a proof-of-concept, pushing it to GitHub and putting a link here will speed up the process."