fix(tekton): Trigger updates

[briangleeson]

Description

• Add support for favorite triggers in Tekton pipeline
• Also includes some documentation updates

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Relates OR Closes #0000

Output from acceptance testing:

$ make testacc TEST=./ibm/service/cdtektonpipeline TESTARGS='-run=TestAccIBMCdTekton*'
==> Checking that code complies with gofmt requirements...
TF_ACC=1 go test ./ibm/service/cdtektonpipeline -v -run=TestAccIBMCdTekton* -timeout 700m
[WARN] Set the environment variable IBM_CODE_ENGINE_SERVICE_INSTANCE_ID with the ID of a IBM Cloud service instance, e.g. for COS
[WARN] Set the environment variable IBM_CODE_ENGINE_RESOURCE_KEY_ID with the ID of a resource key to access a service instance
=== RUN   TestAccIBMCdTektonPipelineDefinitionDataSourceBasic
--- PASS: TestAccIBMCdTektonPipelineDefinitionDataSourceBasic (81.28s)
=== RUN   TestAccIBMCdTektonPipelinePropertyDataSourceBasic
--- PASS: TestAccIBMCdTektonPipelinePropertyDataSourceBasic (66.92s)
=== RUN   TestAccIBMCdTektonPipelinePropertyDataSourceAllArgs
--- PASS: TestAccIBMCdTektonPipelinePropertyDataSourceAllArgs (119.83s)
=== RUN   TestAccIBMCdTektonPipelineDataSourceBasic
--- PASS: TestAccIBMCdTektonPipelineDataSourceBasic (63.87s)
=== RUN   TestAccIBMCdTektonPipelineDataSourceAllArgs
--- PASS: TestAccIBMCdTektonPipelineDataSourceAllArgs (85.71s)
=== RUN   TestAccIBMCdTektonPipelineTriggerPropertyDataSourceBasic
--- PASS: TestAccIBMCdTektonPipelineTriggerPropertyDataSourceBasic (70.78s)
=== RUN   TestAccIBMCdTektonPipelineTriggerPropertyDataSourceAllArgs
--- PASS: TestAccIBMCdTektonPipelineTriggerPropertyDataSourceAllArgs (83.99s)
=== RUN   TestAccIBMCdTektonPipelineTriggerDataSourceBasic
--- PASS: TestAccIBMCdTektonPipelineTriggerDataSourceBasic (70.52s)
=== RUN   TestAccIBMCdTektonPipelineTriggerDataSourceAllArgs
--- PASS: TestAccIBMCdTektonPipelineTriggerDataSourceAllArgs (83.48s)
=== RUN   TestAccIBMCdTektonPipelineDefinitionBasic
--- PASS: TestAccIBMCdTektonPipelineDefinitionBasic (79.31s)
=== RUN   TestAccIBMCdTektonPipelinePropertyBasic
--- PASS: TestAccIBMCdTektonPipelinePropertyBasic (76.92s)
=== RUN   TestAccIBMCdTektonPipelinePropertyAllArgs
--- PASS: TestAccIBMCdTektonPipelinePropertyAllArgs (117.97s)
=== RUN   TestAccIBMCdTektonPipelineBasic
--- PASS: TestAccIBMCdTektonPipelineBasic (76.90s)
=== RUN   TestAccIBMCdTektonPipelineAllArgs
--- PASS: TestAccIBMCdTektonPipelineAllArgs (121.88s)
=== RUN   TestAccIBMCdTektonPipelineTriggerPropertyBasic
--- PASS: TestAccIBMCdTektonPipelineTriggerPropertyBasic (85.52s)
=== RUN   TestAccIBMCdTektonPipelineTriggerPropertyAllArgs
--- PASS: TestAccIBMCdTektonPipelineTriggerPropertyAllArgs (152.31s)
=== RUN   TestAccIBMCdTektonPipelineTriggerBasic
--- PASS: TestAccIBMCdTektonPipelineTriggerBasic (117.84s)
=== RUN   TestAccIBMCdTektonPipelineTriggerAllArgs
--- PASS: TestAccIBMCdTektonPipelineTriggerAllArgs (143.51s)
PASS
ok      github.com/IBM-Cloud/terraform-provider-ibm/ibm/service/cdtektonpipeline        1704.221s
...