feat(rules): add explicit matching strategies

This commit is the first in a series of commits which will pave the way
for regex rule matching support in komorebi.

For now, in order to maintain backwards compat and not break anything,
all rules without a matching strategy will get assigned as using the
"Legacy" strategy.

This and the "Equals" strategy are the only two which have been
implemented so far.

There should not be any breaking changes in this commit, not any
functionality lost for users with pre-existing configurations.

re #60

komorebi-core/src/config_generation.rs

@@ -50,10 +50,22 @@ impl ApplicationOptions {
     }
 }
 
-#[derive(Clone, Debug, Serialize, Deserialize, JsonSchema)]
+#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize, JsonSchema)]
 pub struct IdWithIdentifier {
     pub kind: ApplicationIdentifier,
     pub id: String,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub matching_strategy: Option<MatchingStrategy>,
+}
+
+#[derive(Clone, Debug, Eq, PartialEq, Serialize, Deserialize, JsonSchema)]
+pub enum MatchingStrategy {
+    Legacy,
+    Equals,
+    StartsWith,
+    EndsWith,
+    Contains,
+    Regex,
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize, JsonSchema)]
@@ -62,6 +74,18 @@ pub struct IdWithIdentifierAndComment {
     pub id: String,
     #[serde(skip_serializing_if = "Option::is_none")]
     pub comment: Option<String>,
+    #[serde(skip_serializing_if = "Option::is_none")]
+    pub matching_strategy: Option<MatchingStrategy>,
+}
+
+impl From<IdWithIdentifierAndComment> for IdWithIdentifier {
+    fn from(value: IdWithIdentifierAndComment) -> Self {
+        Self {
+            kind: value.kind,
+            id: value.id.clone(),
+            matching_strategy: value.matching_strategy,
+        }
+    }
 }
 
 #[derive(Clone, Debug, Serialize, Deserialize, JsonSchema)]