feat: added an action to get jira info

[anicke]

An action has been added to the "jiradashboard-backend" plugin that will fetch the summary and description of a jira issue.

• [x] I have performed a self-review of my own code
• [x] I have verified that the code builds perfectly fine on my local system
• [x] I have verified that my code follows the style already available in the repository
• [x] A changeset describing the change and affected packages. (more info)
• [x] Tests for new functionality and regression tests for bug fixes
• [x] Added or updated documentation
• [ ] Screenshots attached (for UI changes)

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: e42797009b7d2353314ab72ba6dee21da4016ba8

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 6 packages

Name	Type
@axis-backstage/plugin-jira-dashboard-backend	Patch
@axis-backstage/plugin-jira-dashboard-common	Patch
backend	Patch
app-next	Patch
app	Patch
@axis-backstage/plugin-jira-dashboard	Patch

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