Add support for gitsigns

[Shahabaz-Bagwan]

First of all thank you for creating such a useful plugin.

Feature Request

After using it I feel like the scroll bar should show overview of the document like vscode have.

How I am getting that feature right now

To mitigate this I am using it with other plugin "nvim-scrollbar" irony is the scrollbar plugin shows view of the scroll and scrollview plugin actually implements scrolling 😆

My config:

https://github.com/Shahabaz-Bagwan/nvChadCustom/blob/922ab1f5382f2df8d3b3cb8e741f6d878bd65fea/plugins.lua#L153

[XXiaoA]

Gitsigns has been supported. Take a look at https://github.com/dstein64/nvim-scrollview/blob/main/lua/scrollview/contrib/gitsigns.lua

[dstein64]

@Shahabaz-Bagwan, in addition to the link that @XXiaoA posted, you might also find the following comment helpful:

#87 (comment)

Because gitsigns is not supported as a built-in sign group, it can't be enabled by adding it to scrollview_signs_on_startup. Rather, it has to be enabled with:

require('scrollview.contrib.gitsigns').setup()

[subev]

@dstein64 Add this to the main README, I almost would have missed adding it.
Great plugin, great work 🙇

[dstein64]

Hi @subev, I'm glad to hear you like the plugin.

I just added a paragraph to the README that mentions the contrib sign groups (coc and gitsigns).

nvim-scrollview/README.md

Lines 103 to 107 in 8e26805

	The [contrib](lua/scrollview/contrib) directory contains sign group
	implementations that are not built-in (e.g., `coc`, `gitsigns`), but may be
	useful to some users. The code there does not receive the same level of support
	as the main source code, and may be less stable. Use at your own risk. For
	installation instructions and other documentation, see the source code files.