feat: major Greengrass architecture refactor and component updates

[thomas-roos]

This commit introduces significant improvements to the AWS IoT Greengrass integration in meta-aws, including architectural separation, version updates, and new component examples.

• Split greengrass-common.inc into separate bbclasses for better modularity

• Add greengrass-component.bbclass for classic Greengrass v2 components

• Add greengrass-lite-component.bbclass for Greengrass Lite components

• Update greengrass-plugin.bbclass with enhanced functionality

• Upgrade greengrass-bin from v2.14.1 to v2.15.0

• Update greengrass-lite to v2.2.1 with bug fixes and improvements

• Remove obsolete greengrass.service.patch, update loader.patch

• Add greengrass-component-helloworld-bash: Bash-based component example

• Add greengrass-component-helloworld-python: Python-based component example

• Add greengrass-component-helloworld-sdk-lite: C SDK Lite component example

• All examples include proper component recipes and ptest integration

• Add deployment copy path fix (002-fix-deployment-copy-path.patch)

• Add multi-component CLI support (003-ggl-cli-multi-component.patch)

• Fix fleet provisioning circular dependency (004-fix-fleet-provisioning-circular-dependency.patch)

• Add local deployment service (ggl.local-deployment.service)

• Add image component deployment script (ggl-deploy-image-components)

• Update fleet provisioning services with improved configuration

• Remove demo certificate files for security

• Add proper systemd service integration

• Update configuration template with better defaults

• Remove deprecated board ID replacement script

• Update README.md with new component architecture and examples

• Add comprehensive component development guidance

This refactor provides a cleaner separation between Greengrass variants,

Issue #, if available:

Description of changes:

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[aws-iot-embedded-linux-ci]

Backport failed for kirkstone-next, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin kirkstone-next
git worktree add -d .worktree/backport-13238-to-kirkstone-next origin/kirkstone-next
cd .worktree/backport-13238-to-kirkstone-next
git switch --create backport-13238-to-kirkstone-next
git cherry-pick -x 572867efac58c26fc4e1085cbbe9b7a89d07ebf0

[aws-iot-embedded-linux-ci]

Backport failed for scarthgap-next, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin scarthgap-next
git worktree add -d .worktree/backport-13238-to-scarthgap-next origin/scarthgap-next
cd .worktree/backport-13238-to-scarthgap-next
git switch --create backport-13238-to-scarthgap-next
git cherry-pick -x 572867efac58c26fc4e1085cbbe9b7a89d07ebf0

[aws-iot-embedded-linux-ci]

Backport failed for walnascar-next, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally and resolve any conflicts.

git fetch origin walnascar-next
git worktree add -d .worktree/backport-13238-to-walnascar-next origin/walnascar-next
cd .worktree/backport-13238-to-walnascar-next
git switch --create backport-13238-to-walnascar-next
git cherry-pick -x 572867efac58c26fc4e1085cbbe9b7a89d07ebf0