Refactor GenericAngle into separate header

Author: nycrat

src/software/geom/BUILD

@@ -1,9 +1,15 @@
 package(default_visibility = ["//visibility:public"])
 
+cc_library(
+    name = "generic_angle",
+    hdrs = ["generic_angle.h"],
+    deps = [":geom_constants"],
+)
+
 cc_library(
     name = "angle",
     hdrs = ["angle.h"],
-    deps = [":geom_constants"],
+    deps = [":generic_angle"],
 )
 
 cc_library(
@@ -36,13 +42,13 @@ cc_library(
 cc_library(
     name = "angular_velocity",
     hdrs = ["angular_velocity.h"],
-    deps = [":angle"],
+    deps = [":generic_angle"],
 )
 
 cc_library(
     name = "angular_acceleration",
     hdrs = ["angular_acceleration.h"],
-    deps = [":angle"],
+    deps = [":generic_angle"],
 )
 
 cc_library(