Auto-delete old dev packages after release

[Copilot]

Dev packages accumulate in GitHub Container Registry with versions like X.Y.Z-dev.TIMESTAMP during development. After a release, only dev packages for the released version should be retained.

Changes

Added cleanup step in maven-publish.yml after Docker image publication:

• Extracts release version from git tag (v0.11.0 → 0.11.0)
• Queries GitHub Packages API for all -dev.* versions of each container package
• Retains only dev versions matching current release (0.11.0-dev.*)
• Deletes all other dev versions (0.10.0-dev.*, 0.9.0-dev.*, etc.)

Affected Packages

• akces-operator
• akces-crypto-trading-aggregates
• akces-crypto-trading-commands
• akces-crypto-trading-queries

Example

Release v0.11.0 will:

• Keep: 0.11.0-dev.20241116123456, 0.11.0-dev.20241116234567
• Delete: All dev versions from 0.10.0, 0.9.0, and earlier

Original prompt

On maven-publish.yml, in the maven publish step, after the new docker images have been released, delete all the dev packages of the previous version.. so keep only the dev packages for the released version (because most likely as part of the development process these are still deployed)

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