feat: añadidos primeros casos de uso

necesito opiniones

Documentacion/CasosDeUso.org

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+#+title: Casos De Uso
+
+* Usuario Registra Nuevo Producto
+#+begin_src plantuml :file registroProducto.jpg
+@startuml
+actor "Cliente" <<Persona>> as fc
+rectangle RegistrarProductos {
+  usecase "Gestionar Productos" as UC1
+  usecase "Listar Productos" as UC2
+  usecase "Modificar Productos" as UC3
+  usecase "Eliminar Producto" as UC4
+  usecase "Registrar Producto" as UC5
+
+  usecase "Gestionar Categorias" as uc6
+}
+fc --> UC1
+UC1 ..> UC2: "include"
+UC3 ..> UC1: "extend"
+UC4 ..> UC1: "extend"
+UC5 ..> UC1: "extend"
+
+UC3 .> uc6: "include"
+UC5 .> uc6: "include"
+@enduml
+#+end_src
+
+#+RESULTS:
+[[file:registroProducto.jpg]]
+
+* Usuario Registra Categorias
+#+begin_src plantuml :file RegistroCategorias.jpg
+@startuml
+actor "Cliente" <<Persona>> as fc
+rectangle RegistrarCategorias {
+  usecase "Gestionar Categorias" as UC1
+  usecase "Eliminar Categoria" as UC4
+  usecase "Registrar Categoria" as UC5
+}
+fc --> UC1
+UC4 ..> UC1: "extend"
+UC5 ..> UC1: "extend"
+@enduml
+#+end_src
+
+#+RESULTS:
+[[file:RegistroCategorias.jpg]]
+
+* Usuario Registra Facturas
+
+#+begin_src plantuml :file RegistroFacturas.jpg
+@startuml
+actor "Cliente" <<Persona>> as fc
+rectangle RegistrarFacturas {
+  usecase "Gestionar Facturas" as uc0
+  usecase "Registrar Factura" as UC1
+  usecase "Listar Productos Con Existencias" as UC2
+  usecase "Filtrar Producto Por Categoria" as uc3
+  usecase "Descontar Stock" as uc4
+}
+
+fc --> uc0
+uc0 <.. UC1: "extend"
+uc0 ..> UC2: "include"
+UC2 ..> uc3: "include"
+UC1 ..> uc4: "include"
+@enduml
+#+end_src
+
+#+RESULTS:
+[[file:RegistroFacturas.jpg]]