feat(dap.lua): add configuration for dap and dap-ui plugins to enable debugging features in Neovim

feat(lsp-config.lua): configure python lsp using pylsp to provide language server capabilities for Python files
refactor(magma.lua): remove magma plugin configuration as it is no longer used
feat(mason.lua): add configuration for mason and mason-nvim-dap plugins to enable package management and debugging features in Neovim
refactor(init.lua): set maplocalleader to "\\" for easier keybindings
refactor(remap.lua): remove setting mapleader to " " as it is no longer needed, add keybinding for toggling file explorer using NvimTreeToggle command

lua/absolute/plugins/dap.lua

@@ -0,0 +1,13 @@
+return {
+    "mfussenegger/nvim-dap",
+    dependencies = {
+        -- "theHamsta/nvim-dap-virtual-text",
+        "rcarriga/nvim-dap-ui",
+        -- "nvim-telescope/telescope-dap.nvim",
+        { "mfussenegger/nvim-dap-python", ft = "python", dependencies = { "mfussenegger/nvim-dap" } },
+        -- "Pocco81/DAPInstall.nvim"
+    },
+    config = function()
+        require("absolute.after.dap")
+    end
+}