release: remove xDaysBeforeRelease, unify issue and timelines (#17401)

* Remove `xDaysBeforeRelease` and associated features (calendar events, template args, etc)
* Unify generation of issues and calendar events, as well as things like release naming. Previously this was rather brittle to change and had a lot of code duplication
* Other improvements:
  * `tracking:issues` now handles _all_ tracking issue generation
  * Calendar dry run
  * Backlinks to "parent" issue for child issues related to a release
  * Update patch request issue

.github/ISSUE_TEMPLATE/request_patch_release.md

@@ -43,8 +43,8 @@ I have read [when and why we perform patch releases](https://about.sourcegraph.c
 
 - If there is [already an upcoming patch release](https://github.com/sourcegraph/sourcegraph/issues?q=is%3Aissue+label%3Arelease-tracking+), add the listed commits alongside a link to this issue
 - If there is no upcoming patch release, create a new one:
-  - Update [`dev/release/release-config.jsonc`](https://sourcegraph.com/github.com/sourcegraph/sourcegraph/-/blob/dev/release/release-config.jsonc) with the patch release in `upcomingRelease` (and open a PR to `main` to update it)
-  - `cd dev/release && yarn build && yarn run release tracking:patch-issue`
+  - Update [`dev/release/release-config.jsonc`](https://sourcegraph.com/github.com/sourcegraph/sourcegraph/-/blob/dev/release/release-config.jsonc) with the patch release in `upcomingRelease` and `releaseDate` (and open a PR to `main` to update it)
+  - `yarn release tracking:issues`
   - Add the listed commits alongside a link to this issue to the generated [release tracking issue](https://github.com/sourcegraph/sourcegraph/issues?q=is%3Aissue+label%3Arelease-tracking+)
 
 Comment and close this issue once the relevant commit(s) have been cherry-picked into the release branch.

dev/release/release-config.jsonc

@@ -18,11 +18,8 @@
     "upcomingRelease": "3.24.0",
 
     // Release dates
+    "releaseDate": "20 January 2021 10:00 PST",
     "oneWorkingDayAfterRelease": "21 January 2021 10:00 PST",
-    "releaseDateTime": "20 January 2021 10:00 PST",
-    "oneWorkingDayBeforeRelease": "19 January 2021 10:00 PST",
-    "fourWorkingDaysBeforeRelease": "15 January 2021 10:00 PST",
-    "fiveWorkingDaysBeforeRelease": "14 January 2021 10:00 PST",
 
     // Channel where messages from the tooling are posted
     "slackAnnounceChannel": "dev-announce",
@@ -37,6 +34,7 @@
     "dryRun": {
         "tags": false,
         "changesets": false,
-        "trackingIssues": false
+        "trackingIssues": false,
+        "calendar": false
     }
 }

dev/release/src/config.ts

@@ -15,10 +15,7 @@ export interface Config {
     previousRelease: string
     upcomingRelease: string
 
-    releaseDateTime: string
-    oneWorkingDayBeforeRelease: string
-    fourWorkingDaysBeforeRelease: string
-    fiveWorkingDaysBeforeRelease: string
+    releaseDate: string
     oneWorkingDayAfterRelease: string
 
     slackAnnounceChannel: string
@@ -27,6 +24,7 @@ export interface Config {
         tags?: boolean
         changesets?: boolean
         trackingIssues?: boolean
+        calendar?: boolean
     }
 }