Parser and type checker almost completely working

Added testing env

resources/Enums/testEnum1.rosetta

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+enum PeriodEnum: <"The enumerated values to specified the period, e.g. day, week.">
+    D displayName "day" <"Day">
+    M displayName "month" <"Month">
+    Y displayName "year" <"Year">

resources/Enums/testEnum2.rosetta

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+enum EnumWithoutDisplay: <"The enumerated values to specified the period, e.g. day, week.">
+    D <"Day">
+    M <"Month">
+    Y <"Year">

resources/Enums/testEnum3.rosetta

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+enum EnumWithoutDescription:
+    X displayName "xs"
+    Y displayName "ys"

resources/Enums/testEnum4.rosetta

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+enum Wrong:
+    A <"asd"> displayName "dsa"
+    B <"xyz"> displayName "zyx"

resources/Enums/testEnum5.rosetta

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+enum Wrong2
+    A <"asd"> displayName "dsa"
+    B <"xyz"> displayName "zyx"

resources/Enums/testEnum6.rosetta

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+enum Wrong3::
+    A <"asd"> displayName "dsa"
+    B <"xyz"> displayName "zyx"

resources/Types/testType1.rosetta

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+type Period: <"description">
+    periodMultiplier int (1..1) <"A time period multiplier, e.g. 1, 2 or 3 etc. A negative value can be used when specifying an offset relative to another date, e.g. -2 days.">
+    testMany TestType (0..*) <"Test many">
+    testSome TestSomeType (1..*) <"Test some">
+    testMaybeOne TestZeroOneType (0..1) <"Test zero or one">
+    testAll Test (2..15) <"Test all">

resources/Types/testType2.rosetta

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+type TestType:
+    periodMultiplier int (1..1)

resources/Types/testType3.rosetta

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+type TestSomeType: <"description">
+    periodMultiplier int (1..1) <"A time period multiplier, e.g. 1, 2 or 3 etc. A negative value can be used when specifying an offset relative to another date, e.g. -2 days.">

resources/Types/testType4.rosetta

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+type TestZeroOneType extends Period:
+    periodMultiplier int (1..1)

resources/Types/testType5.rosetta

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+type WrongCardinality: <"description">
+    periodMultiplier int (1.1) <"A time period multiplier, e.g. 1, 2 or 3 etc. A negative value can be used when specifying an offset relative to another date, e.g. -2 days.">

resources/Types/testType6.rosetta

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+type WrongCardinality2: <"description">
+    periodMultiplier int (1..a) <"A time period multiplier, e.g. 1, 2 or 3 etc. A negative value can be used when specifying an offset relative to another date, e.g. -2 days.">

resources/Types/testType7.rosetta

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+type MissingType: <"description">
+    periodMultiplier (1.1) <"A time period multiplier, e.g. 1, 2 or 3 etc. A negative value can be used when specifying an offset relative to another date, e.g. -2 days.">

resources/testFunction.rosetta

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+func EquityPriceObservation: <"Function specification for the observation of an equity price, based on the attributes of the 'EquityValuation' class.">
+   inputs:
+      equity Equity (1..1)
+      valuationDate AdjustableOrRelativeDate (1..1)
+      valuationTime BusinessCenterTime (0..1)
+      timeType TimeTypeEnum (0..1)
+      determinationMethod DeterminationMethodEnum (1..*)
+   output:
+      observation ObservationPrimitive (1..1)
+
+   assign-output
+       observation: if asd exists then var2