Moved the context in a more fitting package

...ava/fr/insarennes/nperier/minichamo/language/Context.java

...r/minichamo/language/expressions/ConditionExpression.java

...es/nperier/minichamo/language/expressions/Expression.java

...perier/minichamo/language/expressions/NameExpression.java

...nperier/minichamo/language/expressions/VarExpression.java

...r/minichamo/language/expressions/base/BaseExpression.java

...nsarennes/nperier/minichamo/parsing/DefinitionParser.java

...nsarennes/nperier/minichamo/parsing/ExpressionParser.java

.../java/fr/insarennes/nperier/minichamo/parsing/Parser.java

...a/fr/insarennes/nperier/minichamo/parsing/TypeParser.java

...r/insarennes/nperier/minichamo/parsing/TypedefParser.java

...sarennes/nperier/minichamo/language/typing/TypeTests.java

...inichamo/language/typing/unification/UnificationTest.java

...ennes/nperier/minichamo/parsing/DefinitionParserTest.java

...ennes/nperier/minichamo/parsing/ExpressionParserTest.java

.../insarennes/nperier/minichamo/parsing/TypeParserTest.java

...sarennes/nperier/minichamo/parsing/TypedefParserTest.java