Analyze directory using compilation database

[sim642]

Once goblint/analyzer#448 is merged, GobPie should analyze the current directory (where goblint.json is) instead of individual opened files.

Here filesToAnalyze should just be ".":

GobPie/src/main/java/GoblintAnalysis.java

Line 113 in c772b9a

this.commands = new String[] { "goblint", "--conf", "goblint.json", "--set", "result", "json-messages", "-o", pathToJsonResult, fileToAnalyze };