Release 0.5.4

Added lint command. Updated Linux archetype. Fixed solver download wh…

…en the scenario starts.

(Include here a one-line summary of what this PR accomplishes.)

### Changes

- Added lint command, worked for authors when writing a scenario.  run `solver lint` in the directory of your source for the challenge and see what it reports.
- Updated `linux` canonical archetype created when your run `solver create --archetype=linux ...`
- More testing
- Updated readme and roadmap
- Issue #26 
- Issue #27

⚠️
If you are going to upgrade existing challenges that were created before solver version 0.5.4 then you will need to upgrade the `init-background.sh` script.  Here is a [gist](https://gist.github.com/javajon/bc4d814782a1e11d2bf9ad757b6dc692) for that upgrade. If you are creating a new challenge with solver 0.5.4, use the `solver create ...` command and it will generate the correct files, including the `init-background.sh` script.

See [Creating Challenges](https://www.katacoda.community/challenges/challenges.html) and how to use this tool within the [Challenges Solver Utility](https://www.katacoda.community/challenges/challenges-solver.html).

Release 0.5.3

• Fixed: Bug: In testing a challenge, run decrypt command BEFORE running solver view, next, all, and until , #19
• Fixed: Allow the working directory to be configured for all commands, #18
• Updated readme
• Fixed semver calculation via gradle
• Removed --destination switch from create command
• Added bash function() to readme for using with solver packaged in a container
• Bumped dependent versions
• Adjusted solution encryption output message
• More unit testing on create and other commands

Release 0.4.1

Fixing the container publish action.

See [Creating Challenges](https://www.katacoda.community/challenges/challenges.html) and how to use this tool within the [Challenges Solver Utility](https://www.katacoda.community/challenges/challenges-solver.html).

Release 0.3.4

Fixing image container.

### Changes

- Fixing container publish action. 
- Refined command help. 
- Added SOLVER_CONTEXT env override.

See [Creating Chalenges](https://www.katacoda.community/challenges/challenges.html) and how to use this tool within the [Challenges Solver Utility](https://www.katacoda.community/challenges/challenges-solver.html).

Release 0.3.3

Updated create and Linux archetype. Added container image for GitHub …

…container registry, ghcr.io.

## Changes

- Updated create and Linux archetype.
- Added container image for GitHub container registry, ghcr.io.
- Documentation and roadmap changes

See [Creating Chalenges](https://www.katacoda.community/challenges/challenges.html) and how to use this tool within the [Challenges Solver Utility](https://www.katacoda.community/challenges/challenges-solver.html).

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Release 0.3.2

(Test comment, ignore)