chore(release): cut 15.0.0-rc.0

[damyanpetev]

No description provided.

[coveralls]

coverage: 86.103%. remained the same
when pulling 35c4869 on dpetev/release-15.0.0-rc.0
into d25714b on master.

[Copilot]

Pull request overview

Release-candidate version cut across the Ignite UI CLI monorepo packages, updating package versions and internal dependency ranges to align with 15.0.0-rc.0 (and the corresponding Angular templates/schematics RC).

Changes:

• Bumped @igniteui/cli-core, igniteui-cli, and @igniteui/mcp-server to 15.0.0-rc.0.
• Updated @igniteui/angular-templates and @igniteui/angular-schematics versions and adjusted internal dependency ranges.
• Minor devDependencies ordering adjustment in the MCP server package.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
packages/ng-schematics/package.json	Version bump for schematics package and internal dependency range updates.
packages/igx-templates/package.json	Version bump for templates package and internal dependency range update.
packages/igniteui-mcp/igniteui-doc-mcp/package.json	Version bump for MCP server package plus devDependencies ordering tweak.
packages/core/package.json	Version bump for @igniteui/cli-core to 15.0.0-rc.0.
packages/cli/package.json	Version bump for CLI and updated internal dependency ranges to RCs.

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