refactor: ♻️ standerdize filenames and profile names

input/fsh/codeSystems/ImmunizationRoute.fsh

@@ -0,0 +1,18 @@
+CodeSystem: BDImmunizationRouteCS
+Id: bd-immunization-route
+Title: "Bangladesh Immunization Route Code System"
+Description: "Codes for routes of vaccine administration in Bangladesh."
+* ^url = "https://fhir.dghs.gov.bd/core/CodeSystem/bd-immunization-route"
+* ^status = #active
+* ^content = #complete
+
+* #IM "Intramuscular"
+    "Vaccine administered into a muscle."
+* #SC "Subcutaneous"
+    "Vaccine administered under the skin."
+* #ID "Intradermal"
+    "Vaccine administered into the dermis layer of the skin."
+* #ORAL "Oral"
+    "Vaccine administered orally."
+* #IN "Intranasal"
+    "Vaccine administered via the nose."