feat(api): add bindings for imgui-knobs (#211)

* feat(api): add bindings for imgui-knobs

Add bindings for the imgui-knobs extension

* Update example/src/main/java/Extra.java

Update styling

Co-authored-by: SpaiR <klimbetoo@gmail.com>

* Update example/src/main/java/Extra.java

Update styling

Co-authored-by: SpaiR <klimbetoo@gmail.com>

* Update .gitignore

Remove gradle.properties from git ignore

* Update styling

Update styling, field names set to UPPER_CASE, remove throwing exceptions from constructors, refactored flags to general style

---------

Co-authored-by: SpaiR <klimbetoo@gmail.com>

buildSrc/src/main/groovy/tool/generator/GenerateLibs.groovy

@@ -48,7 +48,7 @@ class GenerateLibs extends DefaultTask {
         project.copy { CopySpec spec ->
             ['include/imgui', 'include/imnodes', 'include/imgui-node-editor',
              'include/imguizmo', 'include/implot', 'include/ImGuiColorTextEdit',
-             'include/ImGuiFileDialog', 'include/imgui_club/imgui_memory_editor'].each {
+             'include/ImGuiFileDialog', 'include/imgui_club/imgui_memory_editor', 'include/imgui-knobs'].each {
                 spec.from(project.rootProject.file(it)) { CopySpec s -> s.include('*.h', '*.cpp', '*.inl') }
             }
             spec.from(project.rootProject.file('imgui-binding/src/main/native'))