Handle exception returned from YamlParser

[mmvpm]

Description

Please consider handling exception returned from YamlParser.
If YAML document is empty f.i., com.charleskorn.kaml.EmptyYamlDocumentException is thrown to RD and then to IDE:

com.jetbrains.rd.util.reactive.RdFault: The YAML document is empty., reason: com.charleskorn.kaml.EmptyYamlDocumentException at <root> on line 1, column 1: The YAML document is empty.
	at com.charleskorn.kaml.YamlParser.<init>(YamlParser.kt:41)
	at com.charleskorn.kaml.Yaml.parseToYamlNodeFromReader(Yaml.kt:62)
	at com.charleskorn.kaml.Yaml.parseToYamlNode(Yaml.kt:57)
	at org.utbot.taint.parser.yaml.TaintYamlParser.parse(TaintYamlParser.kt:17)

Originally posted by @alisevych in #1966 (comment)

To Reproduce

1. Enable taint analysis in settings.
2. Specify syntactically incorrect configuration in the ./.idea/utbot-taint-config.yaml file. (the filename may change due to supporting several taint configs Support several user configs for taint analysis #2272).
3. Run test generation.

Expected behavior

If the user makes the mistake in the taint analysis configuration, UnitTestBot should display a window with an understandable error (or at least write some information to logs), but should not fail.

Context

See the Taint analysis docs