Fix VersionChecker logging, timeout, URL and tag-name parsing (#33)

[samatstariongroup]

Prerequisites

• I have written a descriptive pull-request title
• I have verified that there are no overlapping pull-requests open
• I have verified that I am following the EcoreNetto code style guidelines
• I have provided test coverage for my change (where applicable)

Description

• Makes the GitHub releases URL and HTTP timeout configurable via optional constructor parameters with sensible defaults (exposed as ReleasesUrl/Timeout); no DI changes needed.
• Replaces the empty LogError message with a descriptive one that includes the attempted URL; fixes the "GitGub" typo in the timeout warning.
• Parses the release tag tolerantly (strips a leading 'v' and any SemVer pre-release/build suffix, then Version.TryParse), logging a warning and skipping the comparison on a malformed tag instead of throwing FormatException.

[github-actions]

Package	Line Rate	Branch Rate	Complexity	Health
ECoreNetto	84%	74%	401	✔
ECoreNetto.Extensions	99%	93%	101	✔
ECoreNetto.HandleBars	99%	98%	60	✔
ECoreNetto.Reporting	83%	70%	181	✔
ECoreNetto.Tools	94%	87%	59	✔
Summary	88% (2105 / 2389)	79% (472 / 596)	802	✔

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
1 Accepted issue

Measures
0 Security Hotspots
96.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud