convert to date-based versioning and noarch architecture

[runleveldev]

This pull request updates the packaging and release workflow for the LDAP Gateway project to simplify architecture handling and standardize package metadata. The main improvements include switching to architecture-independent package builds, streamlining the GitHub Actions workflow, and updating package metadata for consistency.

Packaging and architecture simplification:

• The build workflow now creates architecture-independent Debian and RPM packages (arch: "all" for deb, noarch for rpm) instead of separate builds for amd64 and arm64. The matrix strategy and related config manipulation were removed to reflect this change. (.github/workflows/build-and-release.yml [1] [2] [3]
• The nfpm configuration file (nfpm/nfpm.yaml) was updated to use dynamic versioning and standardized metadata, including arch: "all", release: 1, and corrected vendor/maintainer names. (nfpm/nfpm.yaml [1] [2]

Workflow and artifact improvements:

• The GitHub Actions workflow now uploads a single package artifact set instead of separate ones per architecture, and the release step matches the new package naming convention. (.github/workflows/build-and-release.yml [1] [2]
• The server version is now extracted from the latest git commit date rather than the package.json file, ensuring version consistency with source control. (.github/workflows/build-and-release.yml .github/workflows/build-and-release.ymlL84-R84)
• The checksum generation step was simplified to only include .deb and .rpm files, removing handling for .tar.gz files. (.github/workflows/build-and-release.yml .github/workflows/build-and-release.ymlL271-L273)

[runleveldev]

@anishapant21 can you ping me on Rocket when this gets merged to main?