Template function instantiation type inference work - super simple inference works (i.e. id<T>(i:T) { return i; }), and the framework is good, just have to flesh out unifyType to handle more than the trivial case

tests/test_templateFuncInfr.krak

@@ -0,0 +1,17 @@
+import io:*
+import mem:*
+import vector:*
+
+fun id<T>(in: T): T { return in; }
+fun idVec<T>(in: vector<T>): T { return in.get(0); }
+
+fun main():int {
+    var fromTemplateFun = id(11)
+    var aVec.construct(): vector<int>
+    aVec.addEnd(12)
+    //var fromTemplateFun = id<int>(11);
+    println(fromTemplateFun)
+    println(idVec(aVec))
+    //println(idVec<int>(aVec))
+    return 0
+}