feat: Init.el tweaks

Turn on tab completion for company, turn vc gutter on, remove multiple
cursors, add lispy, add tree-sitter, remove raku, remove kotlin, remove
java, remove javascript, add scheme.

init.el

@@ -15,7 +15,7 @@
 ;;      directory (for easy access to its source code).
 
 (doom! :completion
-       (company +childframe)           ; the ultimate code completion backend
+       (company +childframe +tng)           ; the ultimate code completion backend
        (ivy +fuzzy +precient +childframe +icons)
 
        :ui
@@ -29,6 +29,7 @@
        (popup +defaults)   ; tame sudden yet inevitable temporary windows
        (treemacs +lsp)          ; a project drawer, like neotree but cooler
        unicode           ; extended unicode support for various languages
+       (vc-gutter +diff-hl +pretty)
        window-select     ; visually switch windows
        workspaces        ; tab emulation, persistence & separate workspaces
        zen               ; distraction-free coding or writing
@@ -37,7 +38,7 @@
        file-templates    ; auto-snippets for empty files
        fold              ; (nigh) universal code folding
        (format +onsave)  ; automated prettiness
-       multiple-cursors  ; editing in many places at once
+       lispy
        rotate-text       ; cycle region at point between text candidates
        snippets          ; my elves. They type so I don't have to
        word-wrap         ; soft wrapping with language-aware indent
@@ -67,27 +68,25 @@
        (magit +forge)             ; a git porcelain for Emacs
        pdf               ; pdf enhancements
        rgb               ; creating color strings
+       tree-sitter
 
        :os
        (:if IS-MAC macos)  ; improve compatibility with macOS
        (tty +osc)
 
        :lang
-       data              ; config/data formats
-       emacs-lisp        ; drown in parentheses
-       json              ; At least it ain't XML
-       (latex +fold)             ; writing papers in Emacs has never been so fun
-       markdown          ; writing docs for people to ignore
-       nix               ; I hereby declare "nix geht mehr!"
-       (org +pandoc +present +roam2 +pomodoro)               ; organize your plain life in plain text
-       raku              ; the artist formerly known as perl6
+       data              
+       emacs-lisp        
+       json              
+       (latex +fold)     
+       markdown          
+       nix               
+       (org +pandoc +present +roam2 +pomodoro)
        rest              ; Emacs as a REST client
        (rust +lsp)
-       (sh +fish)                ; she sells {ba,z,fi}sh shells on the C xor
-       yaml             ; JSON, but readable
-       (kotlin +lsp)
-       (java +lsp +meghanada)
-       (javascript +lsp)
+       (sh +fish)
+       yaml      
+       (scheme +chez)
 
        :email
        (mu4e +org)
@@ -98,5 +97,3 @@
        :config
        literate
        (default +bindings +smartparens))
-
-(add-hook! 'emacs-startup-hook #'doom-init-ui-h)