Added prop to suppress all bp plugin warnings

Test: ./gradlew :benchmark:benchmark-baseline-profile-gradle-plugin:test
Bug: 349646646
Relnote: "Added gradle property
 androidx.baselineprofile.suppressWarnings to
 suppress all baseline profile warnings"
Change-Id: I7c36e3a0da43aa113394404215725b9c86b46cd5

• benchmark/baseline-profile-gradle-plugin/src/main/kotlin/androidx/baselineprofile/gradle/utils/AgpPlugin.kt[diff]
• benchmark/baseline-profile-gradle-plugin/src/main/kotlin/androidx/baselineprofile/gradle/utils/BaselineProfilePluginLogger.kt[diff]
• benchmark/baseline-profile-gradle-plugin/src/test/kotlin/androidx/baselineprofile/gradle/consumer/BaselineProfileConsumerPluginTest.kt[diff]