Switch all vim modules to subtrees

.gitmodules

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+[submodule "home-rc/dot-files/.vim/bundle/nerdtree"]
+	path = home-rc/dot-files/.vim/bundle/nerdtree
+	url = https://github.com/preservim/nerdtree.git
+[submodule "home-rc/dot-files/.vim/bundle/nerdtree-git-plugin"]
+	path = home-rc/dot-files/.vim/bundle/nerdtree-git-plugin
+	url = https://github.com/Xuyuanp/nerdtree-git-plugin.git
+[submodule "home-rc/dot-files/.vim/bundle/undotree"]
+	path = home-rc/dot-files/.vim/bundle/undotree
+	url = https://github.com/mbbill/undotree.git
+[submodule "home-rc/dot-files/.vim/bundle/vim-bufferline"]
+	path = home-rc/dot-files/.vim/bundle/vim-bufferline
+	url = https://github.com/bling/vim-bufferline.git
+[submodule "home-rc/dot-files/.vim/bundle/vim-easymotion"]
+	path = home-rc/dot-files/.vim/bundle/vim-easymotion
+	url = https://github.com/easymotion/vim-easymotion.git
+[submodule "home-rc/dot-files/.vim/bundle/vim-gitgutter"]
+	path = home-rc/dot-files/.vim/bundle/vim-gitgutter
+	url = https://github.com/airblade/vim-gitgutter.git
+[submodule "home-rc/dot-files/.vim/bundle/vim-signature"]
+	path = home-rc/dot-files/.vim/bundle/vim-signature
+	url = https://github.com/kshenoy/vim-signature
+[submodule "home-rc/dot-files/.vim/bundle/vim-fugitive"]
+	path = home-rc/dot-files/.vim/bundle/vim-fugitive
+	url = https://github.com/tpope/vim-fugitive.git