feat: support 'dart install jaspr_cli'

[schultek]

Description

Resolves #569

TODOs:

• [ ] Update to next webdev version once released
• [ ] Blocked until webdev serve is no longer broken

Type of Change

• ✨ New feature or improvement

Ready Checklist

• [ ] I've read the Contribution Guide.
• [ ] In case this PR changes one of the core packages, I've modified the respective CHANGELOG.md file using the semantic_changelog format.
• [ ] I updated/added relevant documentation (doc comments with ///).
• [ ] I added myself to the AUTHORS file (optional, if you want to).

[docs-page[bot]]

To view this pull requests documentation preview, visit the following URL:

docs.page/schultek/jaspr~617

Documentation is deployed and generated using docs.page.

[github-actions[bot]]

Package Version Report

The following packages have been updated: jaspr_test : 0.21.6 -> 0.22.0 jaspr : 0.21.6 -> 0.22.0 jaspr_builder : 0.21.6 -> 0.22.0 jaspr_cli : 0.21.6 -> 0.22.0 jaspr_content : 0.4.2 -> 0.4.3 jaspr_router : 0.7.3 -> 0.7.4 jaspr_flutter_embed : 0.4.9 -> 0.4.10 jaspr_riverpod : 0.4.1 -> 0.4.2 jaspr_serverpod : 0.5.8 -> 0.5.9

[codecov[bot]]

Codecov Report

:x: Patch coverage is 80.18868% with 21 lines in your changes missing coverage. Please review. :white_check_mark: Project coverage is 56.37%. Comparing base (1fe9d8d) to head (c4a8051). :warning: Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
packages/jaspr_cli/lib/src/config.dart	0.00%	12 Missing :warning:
...ges/jaspr_cli/lib/src/commands/doctor_command.dart	0.00%	4 Missing :warning:
packages/jaspr/lib/src/server/server_binding.dart	90.00%	1 Missing :warning:
...ages/jaspr_cli/lib/src/commands/build_command.dart	0.00%	1 Missing :warning:
...ckages/jaspr_cli/lib/src/commands/dev_command.dart	0.00%	1 Missing :warning:
...ges/jaspr_content/lib/src/layouts/docs_layout.dart	0.00%	1 Missing :warning:
.../src/page_extension/heading_anchors_extension.dart	0.00%	1 Missing :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #617      +/-   ##
==========================================
+ Coverage   55.90%   56.37%   +0.47%     
==========================================
  Files         184      184              
  Lines        9486     9555      +69     
==========================================
+ Hits         5303     5387      +84     
+ Misses       4183     4168      -15     

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