Added default keys for show diff and implement method

src/files.h

@@ -96,7 +96,7 @@ R"RAW(
         "source_spellcheck_clear": "",
         "source_spellcheck_next_error": "<primary><shift>e",
         "source_git_next_diff": "<primary>k",
-        "source_git_show_diff": "",
+        "source_git_show_diff": "<alt>k",
         "source_indentation_set_buffer_tab": "",
         "source_indentation_auto_indent_buffer": "<primary><shift>i",
         "source_goto_line": "<primary>g",
@@ -107,7 +107,7 @@ R"RAW(
         "source_goto_usage": "<primary>u",
         "source_goto_method": "<primary>m",
         "source_rename": "<primary>r",
-        "source_implement_method": "",
+        "source_implement_method": "<primary><shift>m",
         "source_goto_next_diagnostic": "<primary>e",
         "source_apply_fix_its": "<control>space",
         "project_set_run_arguments": "",