Added TrustyAI components + default payloadProcessor value for MM configuration

[RobGeada]

This PR adds the deployment specifications for the TrustyAI service, as well as a blank default value within the config-defaults of modelmesh. This lets the ModelMesh config map to be updated later, which lets TrustyAI be installed into an existing RHODS cluster.

• The commits are squashed in a cohesive manner and have meaningful messages.
• For commits that came from upstream, [UPSTREAM] has been prepended to the commit message
• JIRA link(s):
• The Jira story is acked
• An entry has been added to the latest build document in Build Announcements Folder.
• Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious)

Testing instructions:

1. Install the ODH operator into your cluster
2. git clone https://github.com/red-hat-data-services/trustyai-explainability
3. Run the E2E test from the the TrustyAI downstream repo: ./odh-deployment-e2e.sh robgeada TrustyAIInclusion

[RobGeada]

Story: https://issues.redhat.com/browse/RHODS-7733

[zdtsw]

is this for upstream opendatahub-io#740 ?
should have upstream info and jira ticket added into PR's description

@RobGeada

[zdtsw]

should https://github.com/red-hat-data-services/odh-manifests#components be updated to include trustyai ?

[zdtsw]

should we close this @RobGeada ?