add links to the package issue trackers

[devoncarew]

• add links to the package issue trackers in the main readme
• add links to the package issue trackers in the pubspec files (populate the issue_tracker field)
• minor normalization of other repo files

---

• [x] I’ve reviewed the contributor guide and applied the relevant portions to this PR.

Contribution guidelines:

- See our [contributor guide](https://github.com/dart-lang/.github/blob/main/CONTRIBUTING.md) for general expectations for PRs. - Larger or significant changes should be discussed in an issue before creating a PR. - Contributions to our repos should follow the [Dart style guide](https://dart.dev/guides/language/effective-dart) and use `dart format`. - Most changes should add an entry to the changelog and may need to [rev the pubspec package version](https://github.com/dart-lang/sdk/blob/main/docs/External-Package-Maintenance.md#making-a-change). - Changes to packages require [corresponding tests](https://github.com/dart-lang/.github/blob/main/CONTRIBUTING.md#Testing). Note that many Dart repos have a weekly cadence for reviewing PRs - please allow for some latency before initial review feedback.

[github-actions[bot]]

Package publishing

Package	Version	Status	Publish tag (post-merge)
package:characters	1.4.0	ready to publish	characters-v1.4.0
package:args	2.6.1-wip	WIP (no publish necessary)
package:async	2.12.0	already published at pub.dev
package:collection	1.19.1-wip	WIP (no publish necessary)
package:convert	3.1.2	already published at pub.dev
package:crypto	3.0.6	already published at pub.dev
package:fixnum	1.1.1	already published at pub.dev
package:logging	1.3.0	already published at pub.dev
package:os_detect	2.0.3-wip	WIP (no publish necessary)
package:path	1.9.1	already published at pub.dev
package:platform	3.1.6	already published at pub.dev
package:typed_data	1.4.0	already published at pub.dev

Documentation at https://github.com/dart-lang/ecosystem/wiki/Publishing-automation.

[github-actions[bot]]

PR Health

Coverage :heavy_check_mark:

| File | Coverage | | :--- | :--- | This check for [test coverage](https://github.com/dart-lang/ecosystem/wiki/Test-Coverage) is informational (issues shown here will not fail the PR).

API leaks :warning:

The following packages contain symbols visible in the public API, but not exported by the library. Export these symbols or remove them from your publicly visible API. | Package | Leaked API symbols | | :--- | :--- | |path|InternalStyle| This check can be disabled by tagging the PR with `skip-leaking-check`.

License Headers :heavy_check_mark:

``` // Copyright (c) 2024, the Dart project authors. Please see the AUTHORS file // for details. All rights reserved. Use of this source code is governed by a // BSD-style license that can be found in the LICENSE file. ``` | Files | | :--- | | _no missing headers_ | All source files should start with a [license header](https://github.com/dart-lang/ecosystem/wiki/License-Header).

[devoncarew]

Skipping the changelog check; we'll capture the issue_tracker pubspec change organically w/ the next update to each package.

[devoncarew]

The health check failure here may be related to the api diff tool:

Look for changes in package:fixnum 1.1.1 (dir=/home/runner/work/core/core/current_repo/pkgs/fixnum) with base Directory: '../base_repo'
Error: Error while creating the diff: Bad state: Too many elements
#0      Iterable.single (dart:core/iterable.dart:677:24)
#1      PackageApiDiffer._diffIterables (package:dart_apitool/src/diff/package_api_differ.dart:1344:45)
#2      PackageApiDiffer._calculateExecutablesDiff (package:dart_apitool/src/diff/package_api_differ.dart:266:32)
#3      PackageApiDiffer._calculateInterfaceDiff.<anonymous closure> (package:dart_apitool/src/diff/package_api_differ.dart:180:12)
#4      PackageApiDiffer._executeInContext (package:dart_apitool/src/diff/package_api_differ.dart:1263:23)
#5      PackageApiDiffer._calculateInterfaceDiff (package:dart_apitool/src/diff/package_api_differ.dart:175:12)
#6      PackageApiDiffer._calculateInterfacesDiff (package:dart_apitool/src/diff/package_api_differ.dart:137:22)
#7      PackageApiDiffer.diff (package:dart_apitool/src/diff/package_api_differ.dart:47:12)
#8      DiffCommand.run (package:dart_apitool/src/cli/commands/diff_command.dart:188:16)
<asynchronous suspension>
#9      CommandRunner.runCommand (package:args/command_runner.dart:212:13)
<asynchronous suspension>
#10     main (file:///home/runner/.pub-cache/hosted/pub.dev/dart_apitool-0.20.0/bin/main.dart:28:22)