Hydraulic library updated to use macros

Changes include:

- sources.jl
  - MassFlow(; name, p_int)
  - FixedPressure(; p, name)
  - Pressure(; name)

Author: matthew-kapp

.gitignore

@@ -22,3 +22,6 @@ docs/site/
 # committed for packages, but should be committed for applications that require a static
 # environment.
 Manifest.toml
+
+
+src/Hydraulic/changes.md

src/Hydraulic/IsothermalCompressible/sources.jl

@@ -8,20 +8,22 @@ Hydraulic mass flow input source
   - `port`: hydraulic port
   - `dm`: real input 
 """
-@component function MassFlow(; name)
-    pars = []
+@mtkmodel MassFlow begin
+    
+    @parameters begin
+    end
+
+    @variables begin
+    end
 
-    systems = @named begin
+    @components begin
         port = HydraulicPort()
         dm = RealInput()
     end
 
-    vars = []
-    eqs = [
+    @equations begin
         port.dm ~ -dm.u
-    ]
-
-    ODESystem(eqs, t, vars, pars; name, systems)
+    end
 end
 
 """
@@ -35,22 +37,23 @@ Fixed pressure source
 # Connectors:
 - `port`: hydraulic port
 """
-@component function FixedPressure(; p, name)
-    pars = @parameters begin
-        p = p
+@mtkmodel FixedPressure begin
+
+    @parameters begin
+        p
     end
 
-    vars = []
+    @variables begin
+    end
 
-    systems = @named begin
+    @components begin
         port = HydraulicPort()
     end
 
-    eqs = [
+    @equations begin
         port.p ~ p
-    ]
+    end
 
-    ODESystem(eqs, t, vars, pars; name, systems)
 end
 @deprecate Source FixedPressure
 
@@ -63,19 +66,22 @@ input pressure source
 - `port`: hydraulic port
 - `p`: real input 
 """
-@component function Pressure(; name)
-    pars = []
-    vars = []
+@mtkmodel Pressure begin
+
+    @parameters begin
+    end
 
-    systems = @named begin
+    @variables begin
+    end
+
+    @components begin
         port = HydraulicPort()
         p = RealInput()
     end
 
-    eqs = [
+    @equations begin
         port.p ~ p.u
-    ]
+    end
 
-    ODESystem(eqs, t, vars, pars; name, systems)
 end
 @deprecate InputSource Pressure