Helix Config to make it more "Vim-like"

config.toml

# Use Ctrl-C to exit insert mode and return to normal mode
[keys.insert]
"C-c" = "normal_mode"

# Also use Ctrl-C to exit select mode
[keys.select]
"C-c" = ["normal_mode", "keep_primary_selection", "collapse_selection"]

#[keys.normal]
# ... other existing keybindings ...
#"ins" = "insert_mode"