docs: update release process (#722)

.github/ISSUE_TEMPLATE/release.md

@@ -0,0 +1,61 @@
+---
+name: Release issue
+about: Track the progress of the next release of the AsyncAPI spec
+title: ""
+labels: ':shipit: Release'
+assignees: ''
+---
+
+Release X.X.X is scheduled for XXXX
+
+### Detailed info:
+* https://github.com/asyncapi/spec/blob/master/RELEASE_PROCESS.md
+
+### Kick-off:
+* _link to recording of community call where the new release was started_
+
+### Release branches:
+* https://github.com/asyncapi/spec/tree/BRANCH_NAME
+* https://github.com/asyncapi/spec-json-schemas/tree/BRANCH_NAME
+* https://github.com/asyncapi/parser-js/tree/BRANCH_NAME
+
+### Release notes:
+* draft PR - https://github.com/asyncapi/website/pull/PULLREQUEST
+
+### Progress:
+- [ ] Create release branches
+    - [ ] spec
+    - [ ] spec-json-schemas
+    - [ ] parser-js
+- [ ] Update release branches with new versions
+    - [ ] spec
+    - [ ] spec-json-schemas
+    - [ ] parser-js
+- [ ] Update default branches with release branch name
+    - [ ] spec
+    - [ ] spec-json-schemas
+    - [ ] parser-js
+- [ ] Create draft release notes
+- [ ] Update release branches from forks
+    - [ ] spec
+    - [ ] spec-json-schemas
+    - [ ] parser-js
+- [ ] Notify community about release branches
+- [ ] Check for potential release contributions
+- [ ] Draft announcement blog post for new features and changes
+- [ ] Write release notes for new features and changes
+- [ ] Prepare pull requests to merge release branches into master
+    - [ ] spec
+    - [ ] spec-json-schemas
+    - [ ] parser-js
+- [ ] Notify tsc_members about upcoming release
+- [ ] Merge release branches into master
+    - [ ] spec
+    - [ ] spec-json-schemas
+    - [ ] parser-js
+- [ ] Write release notes for the releases on Github
+- [ ] Create releases on Github
+    - [ ] spec
+    - [ ] spec-json-schemas
+    - [ ] parser-js
+- [ ] Update RELEASE_PROCESS doc with any changes