chore: add deprecated to kotlin

Author: ChiragAgg5k

templates/kotlin/src/main/kotlin/io/appwrite/services/ServiceTemplate.kt.twig

@@ -30,6 +30,18 @@ class {{ service.name | caseUcfirst }}(client: Client) : Service(client) {
     {%~ endfor %}
      * @return [{{ method | returnType(spec, sdk.namespace | caseDot) | raw }}]
      */
+    {%~ if method.deprecated %}
+{% set deprecated_message = "This API is deprecated and uses outdated terminologies." %}
+{% if method.replaceWith %}
+{% set deprecated_message = deprecated_message ~ ' Please use ' ~ (method.replaceWith | capitalizeFirst) ~ ' instead.' %}
+    @Deprecated(
+        "{{ deprecated_message }}",
+        ReplaceWith("{{ sdk.namespace | caseDot }}.services.{{ method.replaceWith | capitalizeFirst }}")
+    )
+{% else %}
+    @Deprecated("{{ deprecated_message }}")
+{% endif %}
+{%~ endif %}
     {%~ if method.parameters.all | reduce((carry, param) => carry or not param.required) %}
     @JvmOverloads
     {%~ endif %}
@@ -91,6 +103,18 @@ class {{ service.name | caseUcfirst }}(client: Client) : Service(client) {
     {%~ endfor %}
      * @return [{{ method | returnType(spec, sdk.namespace | caseDot) | raw }}]
      */
+    {%~ if method.deprecated %}
+{% set deprecated_message = "This API is deprecated and uses outdated terminologies." %}
+{% if method.replaceWith %}
+{% set deprecated_message = deprecated_message ~ ' Please use ' ~ (method.replaceWith | capitalizeFirst) ~ ' instead.' %}
+    @Deprecated(
+        "{{ deprecated_message }}",
+        ReplaceWith("{{ sdk.namespace | caseDot }}.services.{{ method.replaceWith | capitalizeFirst }}")
+    )
+{% else %}
+    @Deprecated("{{ deprecated_message }}")
+{% endif %}
+{%~ endif %}
     {%~ if method.parameters.all | reduce((carry, param) => carry or not param.required) %}
     @JvmOverloads
     {%~ endif %}