feat(note-taking): Add venn-nvim

lua/astrocommunity/note-taking/venn-nvim/README.md

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+# venn.nvim
+
+Draw ASCII diagrams in Neovim with ease.
+
+    1. Enable venn mode, :lua Toggle_Venn<cr>
+       - note this enable vim virtual edit mode which allows editing anywhere in the window
+    2. now click any place and write down the texts
+    3. use visual block [Ctrl-v] mode to wrap around the text and press f to draw the box
+    4. connect the boxes using HJKL towards the next box to connect
+                            ┌───┐
+                   ┌────────│ A │──────────┐
+                   │        └───┘          │
+                   │                       │
+                   ▼        ┌───┐          ▼
+                   B───────►│ C │          D
+                            └─┬─┘          │
+                              │            │
+                            ┌─┴─┐          │
+                            │ E │◄─────────┘
+                            └───┘
+
+**Repository:** <https://github.com/jbyuki/venn.nvim>
+

lua/astrocommunity/note-taking/venn-nvim/init.lua

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+return {
+  "jbyuki/venn.nvim",
+  event = "VeryLazy",
+  cmd = "VBox",
+  keys = {
+    {
+      "<Leader>vn",
+      "<Cmd>lua Toggle_venn()<cr>",
+      { silent = true },
+      desc = "Toggle Venn diagram",
+    },
+  },
+  config = function()
+    function _G.Toggle_venn()
+      local venn_enabled = vim.inspect(vim.b.venn_enabled)
+      if venn_enabled == "nil" then
+        vim.notify("enabled Venn mode", "info", { title = "Venn" })
+        vim.b.venn_enabled = true
+        vim.cmd [[setlocal ve=all]]
+        -- draw a line on HJKL keystokes
+        vim.api.nvim_buf_set_keymap(0, "n", "J", "<C-v>j:VBox<CR>", { noremap = true })
+        vim.api.nvim_buf_set_keymap(0, "n", "K", "<C-v>k:VBox<CR>", { noremap = true })
+        vim.api.nvim_buf_set_keymap(0, "n", "L", "<C-v>l:VBox<CR>", { noremap = true })
+        vim.api.nvim_buf_set_keymap(0, "n", "H", "<C-v>h:VBox<CR>", { noremap = true })
+        -- draw a box by pressing "f" with visual selection
+        vim.api.nvim_buf_set_keymap(0, "v", "f", ":VBox<CR>", { noremap = true })
+      else
+        vim.notify("disabled Venn mode", "info", { title = "Venn" })
+        vim.cmd [[setlocal ve=]]
+        vim.api.nvim_buf_del_keymap(0, "n", "J")
+        vim.api.nvim_buf_del_keymap(0, "n", "K")
+        vim.api.nvim_buf_del_keymap(0, "n", "L")
+        vim.api.nvim_buf_del_keymap(0, "n", "H")
+        vim.api.nvim_buf_del_keymap(0, "v", "f")
+        vim.b.venn_enabled = nil
+      end
+    end
+  end,
+}