feat: transpose metadata (#18)

* feat: transpose between frontmatter and inline metadata

* ci: improve codecode patch thresholds

* test: remove ansi escape sequences from `capsys.errout`

* test: improve fixture for shared keys

* build(deps): update dependencies

* refactor: use deepcopy

* docs: add transpose metadata

src/obsidian_metadata/cli.py

@@ -135,6 +135,14 @@ def main(
         • Delete a value from a key
         • Delete an inline tag
 
+    [bold underline]Transpose Metadata[/]
+    Move metadata from inline to frontmatter or the reverse.
+
+        • Transpose all metadata - Moves all frontmatter to inline
+          metadata, or the reverse
+        • Transpose key - Transposes a specific key and all it's values
+        • Transpose value- Transpose a specific key:value pair
+
     [bold underline]Review Changes[/]
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