feat: load config file on startup

CHANGELOG.md

@@ -3,6 +3,9 @@
 ## [Unreleased](https://github.com/Piturnah/gex/compare/v0.4.0...main)
 ### Added
 - Scrolling on cursor movement if content goes off-screen ([#1](https://github.com/Piturnah/gex/issues/1))
+- Config file to configure certain options
+  - `auto_expand_files`
+  - `auto_expand_hunks`
 - Use <kbd>Space</kbd> to toggle expansion of items
 ### Fixed
 - Minibuffer can obscure the available subcommands ([#33](https://github.com/Piturnah/gex/issues/33))

Cargo.toml

@@ -17,10 +17,14 @@ strip = true
 anyhow = "1.0.68"
 clap = { version = "4.3.11", features = ["cargo"] }
 crossterm = "0.26.0"
+dirs = "5.0.1"
 git2 = { version = "0.17.1", default-features = false }
 itertools = "0.11.0"
 nom = "7.1.1"
 paste = "1.0.12"
+serde = { version = "1.0.167", features = ["derive"] }
+serde_ignored = "0.1.8"
+toml = "0.7.6"
 
 #       Tokee
 #      (Gecko gekko)                _____________

README.md

@@ -18,7 +18,7 @@ Primarily, this is a personal project since I recently switched to Neovim from E
 - [x] Simple - uncluttered UI.
 - [x] Intuitive - it should be easy to learn to use gex.
 - [x] Cross platform - primary focus on Linux, but should work well on Windows and MacOS.
-- [ ] Configurable - certain preferences in gex should be configurable to suit your own workflow.
+- [x] [Configurable](./#Configuration) - certain preferences in gex should be configurable to suit your own workflow.
 - [ ] Comprehensive\* - you should be able to use gex to do everything you can do in git.
 
 \* gex supports executing arbitrary git commands with <kbd>:</kbd> for when something is not yet available
@@ -88,6 +88,24 @@ $ gex
 | <kbd>p</kbd> | push              |
 | <kbd>z</kbd> | stash             |
 
+## Configuration
+
+Gex will look for a config file in the following places:
+
+| OS      | Path                                              |
+| ------- | ------------------------------------------------- |
+| Linux   | $XDG_CONFIG_HOME/gex/config.toml                  |
+| MacOS   | $HOME/Library/Application Support/gex/config.toml |
+| Windows | {FOLDERID_RoamingAppData}/gex/config.toml         |
+
+Here is an example `config.toml`:
+
+```toml
+[options]
+auto_expand_files = false
+auto_expand_hunks = false
+```
+
 ## License
 
 This project is dual-licensed under either: