Feature/refactor input clients (#16)

* Improve layer separation by defining InputClients

* Move examples

* Update gitignore

* Adjust local solution selector

* Simplify property building

* Error handling for input fetching

* Http error handling

---------

Co-authored-by: Dominik <wezik@users.noreply.github.com>

Author: wezik

.gitignore

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-.gradle
+.gradle/
 build/
-!gradle/wrapper/gradle-wrapper.jar
-!**/src/main/**/build/
-!**/src/test/**/build/
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-### IntelliJ IDEA ###
-.idea
-.idea/modules.xml
-.idea/jarRepositories.xml
-.idea/compiler.xml
-.idea/libraries/
-*.iws
-*.iml
-*.ipr
-out/
-!**/src/main/**/out/
-!**/src/test/**/out/
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-### Kotlin ###
-.kotlin
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-### Eclipse ###
-.apt_generated
-.classpath
-.factorypath
-.project
-.settings
-.springBeans
-.sts4-cache
-bin/
-!**/src/main/**/bin/
-!**/src/test/**/bin/
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-### NetBeans ###
-/nbproject/private/
-/nbbuild/
-/dist/
-/nbdist/
-/.nb-gradle/
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-### VS Code ###
-.vscode/
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-### Mac OS ###
-.DS_Store
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+.idea/
 .kotlin/
+.cache/
 kls_database.db
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-inputs/*.txt
-inputs/*/*.txt
-!inputs/*/example/
-!inputs/*/example/**
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-.envrc
-.env