Moved to library (#17)

* Moved to library

Signed-off-by: Arnau Mora Gras <arnyminerz@proton.me>

* Added Jitpack badge

Signed-off-by: Arnau Mora Gras <arnyminerz@proton.me>

* Removed proguard rules

Signed-off-by: Arnau Mora Gras <arnyminerz@proton.me>

* Moved all dependency versions to `versions.gradle.kts`

Signed-off-by: Arnau Mora Gras <arnyminerz@proton.me>

* Moved dependency versions to `build.gradle.kts`

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Deprecations

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Suppressed warning for gradle dependency

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Set version to Commit ID

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Removed Jitpack file

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Rollback jitpack.yml removal

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Replaced environment variable get

Signed-off-by: Arnau Mora <arnyminerz@proton.me>

* Rename project to vcard4android

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Signed-off-by: Arnau Mora Gras <arnyminerz@proton.me>
Signed-off-by: Arnau Mora <arnyminerz@proton.me>
Co-authored-by: Ricki Hirner <hirner@bitfire.at>