Add release notes 1.0.1 #11089

Job	Run time
windows-latest jdk-17 unit tests 1 / 2	24m 13s
windows-latest jdk-17 unit tests 2 / 2	24m 52s
macOS-latest jdk-17 unit tests 1 / 2	24m 46s
macOS-latest jdk-17 unit tests 2 / 2	24m 27s
ubuntu-latest jdk-17 unit tests 1 / 2	18m 34s
ubuntu-latest jdk-17 unit tests 2 / 2	18m 47s
ubuntu-latest jdk-8 unit tests 1 / 2	22m 27s
ubuntu-latest jdk-8 unit tests 2 / 2	18m 10s
Gradle MacOS integration	19m 12s
Sbt integration	24m 47s
Maven integration	11m 57s
Gradle integration	12m 42s
Scala CLI integration	16m 20s
Mill integration	18m 22s
LSP integration tests	24m 48s
Scala cross tests	24m 48s
Formatting	52s
Scalafix and docs	9m 37s
Sbt-metals/scripted jdk8	2m 32s
Scala javapc tests	3m 17s
Scala3 latest NIGHTLY cross test	5m 4s
MiMa	1m 24s
	5h 51m 58s

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