feat: add required child type entries to manifest

[shetzel]

What does this PR do?

When deploying certain parent metadata types to orgs for packaging, the child type entries must also be included within the manifest or the deployment will fail.

This PR changes some parent types in the registry so that their children are included when creating the manifest. Specifically, when calling SourceComponent.getChildren() for non-decomposed types, and the types have both a uniqueIdElement and xmlElementName defined, it will create child SourceComponents for manifest entries.

Also, some changes were made to ComponentSet.getObject() so that duplicate entries and wildcard entries with non-wildcard entries are prevented.

What issues does this PR fix or reference?

forcedotcom/cli#1115
forcedotcom/cli#1163
forcedotcom/cli#1170
@W-9798333@
@W-9816625@

Functionality Before

Deploy error when trying to deploy certain parent types to an org for packaging. E.g., Workflow, SharingRules, ManagedTopics.

"Missing in package.xml

Functionality After

Successful deploy. Converting these types generate the correct manifest.

Testing Notes

Types to test with:
CustomLabel, Settings, Workflows, SharingRules, MatchingRules, AssignmentRules, AutoResponseRules, EscalationRules

Source commands to use for testing (all/any types listed above can be used):
sfdx force:source:manifest:create -m Settings
sfdx force:source:manifest:create -m Settings:<specific_setting>

sfdx force:source:convert -m Settings -d settings1
sfdx force:source:convert -m Settings:<specific_setting> -d settings2
sfdx force:source:convert -m Settings:<specific_setting> -n MyPkg -d settings3

// deploy the converted source from above commands
sfdx force:mdapi:deploy -w 3 -d settings1
sfdx force:mdapi:deploy -w 3 -d settings2
sfdx force:mdapi:deploy -w 3 -d settings3

sfdx force:source:deploy -m Settings
sfdx force:source:deploy -m Settings:<specific_setting>

sfdx force:source:retrieve -m Settings
sfdx force:source:retrieve -m Settings:<specific_setting>

[mshanemc]

QA notes: using sharingRules/Workflow repo
✅ converts without error (and that output deploys via mdapi:deploy). Has the same error as below
✅ deploy -p without error
❌ manifest:generate generates some odd duplicated *

<?xml version="1.0" encoding="UTF-8"?>
<Package xmlns="http://soap.sforce.com/2006/04/metadata">
    <types>
        <members>Lead</members>
        <name>SharingRules</name>
    </types>
    <types>
        <members>*</members>
        <name>SharingOwnerRule</name>
    </types>
    <types>
        <members>*</members>
        <name>SharingCriteriaRule</name>
    </types>
    <types>
        <members>*</members>
        <name>SharingGuestRule</name>
    </types>
    <types>
        <members>*</members>
        <name>SharingTerritoryRule</name>
    </types>
    <types>
        <members>Account</members>
        <members>Case</members>
        <name>Workflow</name>
    </types>
    <types>
        <members>*</members>
        <members>*</members>
        <name>WorkflowFieldUpdate</name>
    </types>
    <types>
        <members>*</members>
        <members>*</members>
        <name>WorkflowKnowledgePublish</name>
    </types>
    <types>
        <members>*</members>
        <members>*</members>
        <name>WorkflowTask</name>
    </types>
    <types>
        <members>*</members>
        <members>*</members>
        <name>WorkflowAlert</name>
    </types>
    <types>
        <members>*</members>
        <members>*</members>
        <name>WorkflowSend</name>
    </types>
    <types>
        <members>*</members>
        <members>*</members>
        <name>WorkflowOutboundMessage</name>
    </types>
    <types>
        <members>*</members>
        <members>*</members>
        <name>WorkflowRule</name>
    </types>
    <version>52.0</version>
</Package>

❌ deploy using -x and the above generated manifest throws ERROR running force:source:deploy: The specified metadata type is unsupported: [sharingguestrule]
✅ force:source:deploy -m SharingRules
✅ source:retrieve -m SharingRules pulled a giant number of them (most every object, almost all empty)
✅ force:source:retrieve -m SharingRules:Lead, -p force-app pulls existing ones
❌ retrieve -x package.xml ERROR running force:source:retrieve: The specified metadata type is unsupported: [sharingguestrule]

[shetzel]

This conditional prevents a wildcard from being written in addition to fullNames. It also prevents duplicates.