feat: add new inline metadata (#15)

* feat: add new inline metadata to notes

* fix: prepend note content after frontmatter

* refactor: cleanup search patterns

* feat(regex): find top of note

* test: add headers

* fix: insert to specified location

* test: improve test coverage

* docs: add inline metadata

src/obsidian_metadata/models/enums.py

@@ -11,3 +11,17 @@ class MetadataType(Enum):
     TAGS = "Inline Tags"
     KEYS = "Metadata Keys Only"
     ALL = "All Metadata"
+
+
+class InsertLocation(Enum):
+    """Location to add metadata to notes.
+
+    TOP:            Directly after frontmatter.
+    AFTER_TITLE:    After a header following frontmatter.
+    BOTTOM:         The bottom of the note
+
+    """
+
+    TOP = "Top"
+    AFTER_TITLE = "Header"
+    BOTTOM = "Bottom"