Add Spring annotations for repository and REST endpoints

src/main/java/com/amigoscode/framework/annotations/Component.java

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+package com.amigoscode.framework.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+// Marks a class as a managed component — equivalent to Spring's @Component.
+// This is a generic stereotype annotation for any managed component that doesn't fit into more specific categories.
+// The framework will automatically create an instance of this class and manage its lifecycle.
+// Other classes can then have this component injected via @Autowired.
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Component {
+}

src/main/java/com/amigoscode/framework/annotations/GetMapping.java

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+package com.amigoscode.framework.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+// Maps a method to an HTTP GET request — equivalent to Spring's @GetMapping.
+// @Target(ElementType.METHOD) means this annotation can only be placed on methods.
+// value() holds the URL path pattern, e.g. @GetMapping("/api/users").
+// It defaults to "" so a method can just say @GetMapping and inherit the whole path
+// from the controller's @RequestMapping.
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface GetMapping {
+    String value() default ""; // The URL path this method handles, appended to the controller's base path
+}

src/main/java/com/amigoscode/framework/annotations/PostMapping.java

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+package com.amigoscode.framework.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+// Maps a method to an HTTP POST request — equivalent to Spring's @PostMapping.
+// @Target(ElementType.METHOD) means this annotation can only be placed on methods.
+// value() holds the URL path pattern, e.g. @PostMapping("/api/users").
+// It defaults to "" so a method can just say @PostMapping and inherit the whole path
+// from the controller's @RequestMapping.
+@Target(ElementType.METHOD)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface PostMapping {
+    String value() default ""; // The URL path this method handles, appended to the controller's base path
+}

src/main/java/com/amigoscode/framework/annotations/Repository.java

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+package com.amigoscode.framework.annotations;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+// Marks a class as a repository — equivalent to Spring's @Repository.
+// Repositories handle data access operations and are typically used for database interactions.
+// The framework will automatically create an instance of this class and manage its lifecycle.
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Repository {
+}