Introduce isLatest project flag & allow policies to be limited to latest version

[rkg-mm]

Description

Frontend PR: DependencyTrack/frontend#1017

Implements #4148 :

1. Allows projects to be marked as "latest version" via API endpoints allowing creation and updating of projects
2. It is ensured only 1 project version (per project name) is marked as latest, previously marked version is no longer set to latest after a new version is set to latest
3. Allows policies to be limited to project versions marked as latest (e.g. helpful to only apply the version distance policy to the latest development version)
4. Fixed Bug: ProjectQueryManager contains 2 createProject() Methods, but only one triggered a PROJECT_CREATED event. Refactored both methods to use same implementation to avoid such inconsistencies.

Addressed Issue

closes #4148

Additional Details

Checklist

• I have read and understand the contributing guidelines
• This PR fixes a defect, and I have provided tests to verify that the fix is effective
• This PR implements an enhancement, and I have provided tests to verify that it works as intended
• This PR introduces changes to the database model, and I have added corresponding update logic
• This PR introduces new or alters existing behavior, and I have updated the documentation accordingly

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ +0.05% (target: -1.00%)	✅ 90.85% (target: 70.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (7b18365)	22159	17511	79.02%
Head commit (229a326)	22268 (+109)	17609 (+98)	79.08% (+0.05%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#4184)	142	129	90.85%

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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[nscuro]

Great work, thanks!