New user exit create_http_client

With this commit one can implement the new user exit method
create_http_client for custom http client instantiation.
E.g. to use RFC destinations.

src/http/zcl_abapgit_http.clas.abap

@@ -36,7 +36,7 @@ ENDCLASS.
 
 
 
-CLASS ZCL_ABAPGIT_HTTP IMPLEMENTATION.
+CLASS zcl_abapgit_http IMPLEMENTATION.
 
 
   METHOD acquire_login_details.
@@ -124,6 +124,10 @@ CLASS ZCL_ABAPGIT_HTTP IMPLEMENTATION.
 
     CREATE OBJECT lo_proxy_configuration.
 
+    li_client = zcl_abapgit_exit=>get_instance( )->create_http_client( iv_url ).
+
+    IF li_client IS NOT BOUND.
+
       cl_http_client=>create_by_url(
         EXPORTING
           url                = zcl_abapgit_url=>host( iv_url )
@@ -150,6 +154,8 @@ CLASS ZCL_ABAPGIT_HTTP IMPLEMENTATION.
         zcx_abapgit_exception=>raise( lv_text ).
       ENDIF.
 
+    ENDIF.
+
     IF lo_proxy_configuration->get_proxy_authentication( iv_url ) = abap_true.
       zcl_abapgit_proxy_auth=>run( li_client ).
     ENDIF.

src/zcl_abapgit_exit.clas.abap

@@ -93,6 +93,16 @@ CLASS zcl_abapgit_exit IMPLEMENTATION.
   ENDMETHOD.
 
 
+  METHOD zif_abapgit_exit~create_http_client.
+
+    TRY.
+        ri_client = gi_exit->create_http_client( iv_url ).
+      CATCH cx_sy_ref_is_initial cx_sy_dyn_call_illegal_method.
+    ENDTRY.
+
+  ENDMETHOD.
+
+
   METHOD zif_abapgit_exit~http_client.
 
     TRY.

src/zif_abapgit_exit.intf.abap

@@ -17,6 +17,13 @@ INTERFACE zif_abapgit_exit PUBLIC.
     change_proxy_authentication
       IMPORTING iv_repo_url             TYPE csequence
       CHANGING  cv_proxy_authentication TYPE abap_bool,
+    create_http_client
+      IMPORTING
+        iv_url           TYPE string
+      RETURNING
+        VALUE(ri_client) TYPE REF TO if_http_client
+      RAISING
+        zcx_abapgit_exception,
     http_client
       IMPORTING
         ii_client TYPE REF TO if_http_client,