feat: Make link creation after failed follow optional

- Add new config option in mkdnflow.lua
- Modify followLink function to consult config before creating a link
- Update README with new config details

Author: jakewvincent

README.md

@@ -456,7 +456,8 @@ require('mkdnflow').setup({
             text = text:lower()
             text = os.date('%Y-%m-%d_')..text
             return(text)
-        end
+        end,
+        create_on_follow_failure = true
     },
     new_file_template = {
         use_template = false,
@@ -632,6 +633,10 @@ function(input)
 end
 ```
 
+* 🆕 `links.create_on_follow_failure` (boolean): Whether a link should be created if there is no link to follow under the cursor.
+    * `true` (default): Create a link if there's no link to follow
+    * `false`: Do not create a link if there's no link to follow
+
 #### `new_file_template` (dictionary-like table)
 * `new_file_template.use_template` (boolean)
     * `true`: the template is filled in (if it contains placeholders) and inserted into any new buffers entered by following a link to a buffer that doesn't exist yet

lua/mkdnflow.lua

@@ -64,7 +64,8 @@ local default_config = {
             text = text:lower()
             text = os.date('%Y-%m-%d_') .. text
             return text
-        end
+        end,
+        create_on_follow_failure = true
     },
     new_file_template = {
         use_template = false,

lua/mkdnflow/links.lua

@@ -999,7 +999,7 @@ M.followLink = function(args)
             true,
             {}
         )
-    else
+    elseif links.create_on_follow_failure then
         M.createLink({ range = range })
     end
 end