feat(astronomy-news): enhance error handling and retry logic

[PriyanshuCP42]

• Add custom AstronomyAPIError class for better error tracking
• Implement retry logic with exponential backoff
• Add error categorization (NETWORK, RATE_LIMIT, SERVER, etc.)
• Improve data validation and fallback values
• Enhance error reporting with attempt count and type

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[github-actions]

Thanks for the PR, @PriyanshuCP42!

Quick note: please sign off your commits to pass the DCO check.

Fix (any one):

git commit --amend -s     # adds 'Signed-off-by' to your last commit
git push --force-with-lease

Multiple commits?

git rebase -i origin/main     # mark each as 'reword' and add -s
git push --force-with-lease

What is DCO? See https://developercertificate.org/

[KatalKavya96]

@PriyanshuCP42 Which issue does it solve please link it. If there is no issue please create one and then link it to the PR

[PriyanshuCP42]

@KatalKavya96 I have already rasie an issue

[KatalKavya96]

@ABUDIYAAAA Can you look at these changes once as you implemented this feature

[PriyanshuCP42]

@KatalKavya96 still not assign the issue is there any problems or something else

[ABUDIYAAAA]

@KatalKavya96 seems fine from my side.