Add BOM generation.

[vbabanin]

This PR introduces a Bill of Materials (BOM) to improve dependency version management, ensure compatibility, and prevent conflicts caused by transitive dependencies.

Motivation

• Resolves issues, where mismatched versions cause runtime conflicts.
• Simplifies the management of transitive dependencies by centralizing version control.

Changes

• Addition of a :bom module in settings.gradle.
• Updates in gradle/publish.gradle to configure publishing, signing, and Java platform for BOM projects.
• Addition of bom/build.gradle.kts file to define BOM configurations.

A BOM defines compatible versions of mongodb-driver-sync, mongodb-driver-core, and related components.
Importing the BOM into the dependencyManagement section ensures consistent versions across the dependency tree and eliminates mismatches.

Example of usage in Maven:

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.mongodb</groupId>
            <artifactId>mongodb-driver-bom</artifactId>
            <version>5.4.0</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

JAVA-3808

[vbabanin]

The generated BOM POM is available in the snapshot repository for review: Snapshot Repo Link

[rozza]

LGTM - one nit

Good work with the scala multiversion handling 👍

[rozza]

Great catch 👍

[rozza]

Nit: no ending new line.

[rozza]

Suggested change

	}
	}