feat: Refactor exception hierarchy under a single base class

[iliia-veselov]

Applicable issues

#68

• Title of the pull request follows Conventional Commits specification

By submitting this pull request, I confirm that my contribution is made under the terms of the MIT license.

[statgpt-actions]

Dependency Review

The following issues were found:

• ✅ 0 vulnerable package(s)
• ✅ 0 package(s) with incompatible licenses
• ✅ 0 package(s) with invalid SPDX license definitions
• ⚠️ 1 package(s) with unknown licenses.

See the Details below.

License Issues

settings.gradle

Package	Version	License	Issue Type
org.apache.tomcat.embed:tomcat-embed-websocket	11.0.22	Null	Unknown License

OpenSSF Scorecard

Package	Version	Score	Details
maven/org.apache.tomcat.embed:tomcat-embed-core	11.0.22	Unknown	Unknown
maven/org.apache.tomcat.embed:tomcat-embed-el	11.0.22	Unknown	Unknown
maven/org.apache.tomcat.embed:tomcat-embed-websocket	11.0.22	Unknown	Unknown

Scanned Files

• settings.gradle