[docs] Update CONTRIBUTING.md, add pull request templates (#1216)

* [docs] Update contributing.md

- Add Pull Request process and guidelines.
- Add feature/bug issue process.
- Rearrange some sections for clarity.
- Add overview of package structure.

* [docs] Add build from source links

* [chore] add pull request templates

These link to the new CONTRIBUTING.md document, and include a checklist to validate that contributors have read the guidelines.

* [docs] Put existing stub CoC in separate doc

* update web related stuff in CONTRIBUTING.md

Co-authored-by: f0x <f0x@cthu.lu>

.github/PULL_REQUEST_TEMPLATE/bugfix.md

@@ -0,0 +1,15 @@
+# Description
+
+> Please include a summary of the change and which issue is fixed.
+
+Fixes # (issue)
+
+# Checklist:
+
+- [ ] I have read the [GoToSocial contribution guidelines](https://github.com/superseriousbusiness/gotosocial/blob/main/CONTRIBUTING.md).
+- [ ] I have performed a self-review of my own code.
+- [ ] I have commented my code, particularly in hard-to-understand areas.
+- [ ] I have made any necessary changes to documentation.
+- [ ] New and existing tests pass locally with my changes.
+- [ ] I have run `go fmt ./...` and `golangci-lint run`.
+- [ ] I have added tests that prove my fix is effective.

.github/PULL_REQUEST_TEMPLATE/documentation.md

@@ -0,0 +1,3 @@
+# Description
+
+> Please briefly explain the documentation change that you've made, and why.

.github/PULL_REQUEST_TEMPLATE/feature.md

@@ -0,0 +1,16 @@
+# Description
+
+> Please include a summary of the feature you've coded, and link to the issue that it closes/implements.
+
+Implements # (issue)
+
+# Checklist:
+
+- [ ] I have read the [GoToSocial contribution guidelines](https://github.com/superseriousbusiness/gotosocial/blob/main/CONTRIBUTING.md).
+- [ ] I have discussed my implementation already, either in an issue on the repository, or in the Matrix chat.
+- [ ] I have performed a self-review of my own code.
+- [ ] I have commented my code, particularly in hard-to-understand areas.
+- [ ] I have made any necessary changes to documentation.
+- [ ] New and existing tests pass locally with my changes.
+- [ ] I have run `go fmt ./...` and `golangci-lint run`.
+- [ ] I have added tests that cover my new code.

CODE_OF_CONDUCT.md

@@ -0,0 +1,9 @@
+# Code of Conduct
+
+This document is currently a stub.
+
+In lieu of a fuller code of conduct, here are a few ground rules.
+
+1. We *DO NOT ACCEPT* PRs from right-wingers, Nazis, transphobes, homophobes, racists, harassers, abusers, white-supremacists, misogynists, tech-bros of questionable ethics. If that's you, politely fuck off somewhere else.
+2. Any PR that moves GoToSocial in the direction of surveillance capitalism or other bad fediverse behavior will be rejected.
+3. Don't spam the general chat too hard.

README.md

@@ -10,7 +10,7 @@ With GoToSocial, you can keep in touch with your friends, post, read, and share
 
 **GoToSocial is still [ALPHA SOFTWARE](https://en.wikipedia.org/wiki/Software_release_life_cycle#Alpha)**. It is already deployable and useable, and it federates cleanly with many other Fediverse servers (not yet all). However, many things are not yet implemented, and there are plenty of bugs! We foresee entering beta somewhere in 2023.
 
-Documentation is at [docs.gotosocial.org](https://docs.gotosocial.org). You can skip straight to the API documentation [here](https://docs.gotosocial.org/en/latest/api/swagger/).
+Documentation is at [docs.gotosocial.org](https://docs.gotosocial.org). You can skip straight to the API documentation [here](https://docs.gotosocial.org/en/latest/api/swagger/). To build from source, check the [CONTRIBUTING.md](./CONTRIBUTING.md) file.
 
 Here's a screenshot of the instance landing page!
 
@@ -37,6 +37,7 @@ Here's a screenshot of the instance landing page!
   - [Client App Issues](#client-app-issues)
   - [Federation Issues](#federation-issues)
 - [Contributing](#contributing)
+- [Building](#building)
 - [Contact](#contact)
 - [Credits](#credits)
   - [Libraries](#libraries)
@@ -193,6 +194,10 @@ Since every ActivityPub server implementation has a slightly different interpret
 
 You would like to contribute to GtS? Great! ❤️❤️❤️ Check out the issues page to see if there's anything you intend to jump in on, and read the [CONTRIBUTING.md](./CONTRIBUTING.md) file for guidelines and setting up your dev environment.
 
+## Building
+
+Instructions for building GoToSocial from source are in the [CONTRIBUTING.md](./CONTRIBUTING.md) file.
+
 ## Contact
 
 For questions and comments, you can [join our Matrix space](https://matrix.to/#/#gotosocial-space:superseriousbusiness.org) at `#gotosocial-space:superseriousbusiness.org`. This is the quickest way to reach the devs. You can also mail [admin@gotosocial.org](mailto:admin@gotosocial.org).

docs/index.md

@@ -48,6 +48,10 @@ Since every ActivityPub server implementation has a slightly different interpret
 
 You wanna contribute to GtS? Great! ❤️❤️❤️ Check out the issues page to see if there's anything you wanna jump in on, and read the CONTRIBUTING.md file on the repository for guidelines and setting up your dev environment.
 
+## Building
+
+Instructions for building GoToSocial from source are also in the CONTRIBUTING.md file.
+
 ## Contact
 
 For questions and comments, you can [join our Matrix channel](https://matrix.to/#/#gotosocial:superseriousbusiness.org) at `#gotosocial:superseriousbusiness.org`. This is the quickest way to reach the devs. You can also mail [admin@gotosocial.org](mailto:admin@gotosocial.org).