[mono]FEAT: Paging for mr_diff api (#1320)

* [mono]:FEAT: paging for mr_content diff api

new api: /api/v1/mr/{link}/files-list
returns a new struct: MrDiff (contains the page info)

Signed-off-by: AidCheng <cn.aiden.cheng@gmail.com>

* [mono]:UPDATE: cargo clippy indentation check passed

Signed-off-by: AidCheng <cn.aiden.cheng@gmail.com>

* UPDATE: kind_weghts function

Signed-off-by: AidCheng <cn.aiden.cheng@gmail.com>

* Update ceres/src/api_service/mono_api_service.rs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Aid C. <57825561+AidCheng@users.noreply.github.com>

* Update ceres/src/api_service/mono_api_service.rs

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Signed-off-by: Aid C. <57825561+AidCheng@users.noreply.github.com>

* FIX:clippy error

Signed-off-by: AidCheng <cn.aiden.cheng@gmail.com>

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Signed-off-by: AidCheng <cn.aiden.cheng@gmail.com>
Signed-off-by: Aid C. <57825561+AidCheng@users.noreply.github.com>
Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
Co-authored-by: Quanyi Ma <eli@patch.sh>

Author: 3 people