ci: Complete Maven Central publishing workflow and Android publishing scripts

[andredestro]

No description provided.

[OS-pedrogustavobilro]

Per this error - Also missing this from the packages/capacitor-plugin/android/build-gradle. Same for geolocation

buildscript {
    repositories {
        // add this below other repositories
        maven {
            url = uri("https://plugins.gradle.org/m2/")
        }
    }
    dependencies {
        // add this
        if (System.getenv("CAP_PLUGIN_PUBLISH") == "true") {
            classpath 'io.github.gradle-nexus:publish-plugin:1.3.0'
        }
    }
}

apply plugin: 'com.android.library'
apply plugin: 'kotlin-android'
if (System.getenv("CAP_PLUGIN_PUBLISH") == "true") {
    apply plugin: 'io.github.gradle-nexus.publish-plugin'
    apply from: file('../../../scripts/android/publish-root.gradle')
    apply from: file('../../../scripts/android/publish-module.gradle')
}

And the capacitor dependency should be like below (same for geolocation):

dependencies {
    if (System.getenv("CAP_PLUGIN_PUBLISH") == "true") {
        implementation "com.capacitorjs:core:$capacitorVersion"
    } else {
        implementation project(':capacitor-android')
    }
}