New: Adding comments

[s2g090123]

Issue #37

Description

1. Add some comments to explain the purpose of the code.

[github-actions]

My friend, I approved this PR.

[github-actions]

	19 Warnings
⚠️	Big PR
⚠️	app/build.gradle#L73 - A newer version of androidx.core:core-ktx than 1.9.0 is available: 1.12.0
⚠️	app/build.gradle#L76 - A newer version of androidx.test.ext:junit than 1.1.3 is available: 1.1.5
⚠️	app/build.gradle#L77 - A newer version of androidx.test.espresso:espresso-core than 3.4.0 is available: 3.5.1
⚠️	app/build.gradle#L80 - A newer version of androidx.activity:activity-compose than 1.6.1 is available: 1.8.2
⚠️	app/build.gradle#L81 - A newer version of androidx.compose.ui:ui than 1.3.1 is available: 1.5.4
⚠️	app/build.gradle#L82 - A newer version of androidx.compose.material:material than 1.3.0 is available: 1.5.4
⚠️	app/build.gradle#L83 - A newer version of androidx.compose.ui:ui-tooling-preview than 1.3.0 is available: 1.5.4
⚠️	app/build.gradle#L84 - A newer version of androidx.compose.ui:ui-test-junit4 than 1.3.0 is available: 1.5.4
⚠️	app/build.gradle#L85 - A newer version of androidx.compose.ui:ui-tooling than 1.3.0 is available: 1.5.4
⚠️	app/build.gradle#L86 - A newer version of androidx.compose.ui:ui-test-manifest than 1.3.0 is available: 1.5.4
⚠️	app/build.gradle#L88 - A newer version of androidx.navigation:navigation-compose than 2.5.3 is available: 2.7.6
⚠️	app/build.gradle#L93 - A newer version of androidx.lifecycle:lifecycle-runtime-ktx than 2.5.1 is available: 2.7.0
⚠️	app/build.gradle#L94 - A newer version of androidx.lifecycle:lifecycle-viewmodel-ktx than 2.5.1 is available: 2.7.0
⚠️	app/build.gradle#L95 - A newer version of androidx.lifecycle:lifecycle-livedata-ktx than 2.5.1 is available: 2.7.0
⚠️	app/build.gradle#L105 - A newer version of androidx.room:room-runtime than 2.4.3 is available: 2.6.1
⚠️	app/build.gradle#L106 - A newer version of androidx.room:room-ktx than 2.4.3 is available: 2.6.1
⚠️	app/build.gradle#L129 - A newer version of androidx.compose.ui:ui-test-junit4 than 1.3.0 is available: 1.5.4
⚠️	app/build.gradle#L132 - A newer version of androidx.navigation:navigation-testing than 2.5.3 is available: 2.7.6

	1 Message
📖	Thanks @s2g090123!

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