style(init): Modularize entire init.lua

Now each plugin is in it's own seperate file that returns the plugin and
it's configs. This makes it simpler for me apply lazy loading to this
config.

Settings, Keymaps, Yank-highlight are inside kickstart directory within
their seperate files.

lua/kickstart/settings.lua

@@ -0,0 +1,40 @@
+-- [[ Setting options ]]
+-- See `:help vim.o`
+-- NOTE: You can change these options as you wish!
+
+-- Set highlight on search
+vim.o.hlsearch = false
+
+-- Make line numbers default
+vim.wo.number = true
+
+-- Enable mouse mode
+vim.o.mouse = 'a'
+
+-- Sync clipboard between OS and Neovim.
+--  Remove this option if you want your OS clipboard to remain independent.
+--  See `:help 'clipboard'`
+vim.o.clipboard = 'unnamedplus'
+
+-- Enable break indent
+vim.o.breakindent = true
+
+-- Save undo history
+vim.o.undofile = true
+
+-- Case-insensitive searching UNLESS \C or capital in search
+vim.o.ignorecase = true
+vim.o.smartcase = true
+
+-- Keep signcolumn on by default
+vim.wo.signcolumn = 'yes'
+
+-- Decrease update time
+vim.o.updatetime = 250
+vim.o.timeoutlen = 300
+
+-- Set completeopt to have a better completion experience
+vim.o.completeopt = 'menuone,noselect'
+
+-- NOTE: You should make sure your terminal supports this
+vim.o.termguicolors = true