chore: add gitignore and build configuration

.gitignore

@@ -0,0 +1,12 @@
+# build output
+bin/
+obj/
+
+# editors
+*.user
+.vs/
+
+# os / logs / env
+.DS_Store
+*.log
+.env

Fml.sln

@@ -0,0 +1,43 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{EDB30A9B-9974-4794-A994-03737A1F461D}"
+EndProject
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "Fml.Core", "src\Fml.Core\Fml.Core.fsproj", "{0297F9CA-E06A-4D27-976E-DAE649B8D05D}"
+EndProject
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "Fml.Cli", "src\Fml.Cli\Fml.Cli.fsproj", "{E00E5D62-CDCF-4E2D-88A8-866153AB098A}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "tests", "tests", "{33D0D195-BDFD-4893-A93C-A90C7BEDF76E}"
+EndProject
+Project("{F2A71F9B-5D33-465A-A702-920D77279786}") = "Fml.Tests", "tests\Fml.Tests\Fml.Tests.fsproj", "{4AE61C49-0A9F-42B9-9EDB-F4F91E88D189}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{0297F9CA-E06A-4D27-976E-DAE649B8D05D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0297F9CA-E06A-4D27-976E-DAE649B8D05D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0297F9CA-E06A-4D27-976E-DAE649B8D05D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0297F9CA-E06A-4D27-976E-DAE649B8D05D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{E00E5D62-CDCF-4E2D-88A8-866153AB098A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{E00E5D62-CDCF-4E2D-88A8-866153AB098A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{E00E5D62-CDCF-4E2D-88A8-866153AB098A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{E00E5D62-CDCF-4E2D-88A8-866153AB098A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{4AE61C49-0A9F-42B9-9EDB-F4F91E88D189}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{4AE61C49-0A9F-42B9-9EDB-F4F91E88D189}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{4AE61C49-0A9F-42B9-9EDB-F4F91E88D189}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{4AE61C49-0A9F-42B9-9EDB-F4F91E88D189}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(NestedProjects) = preSolution
+		{0297F9CA-E06A-4D27-976E-DAE649B8D05D} = {EDB30A9B-9974-4794-A994-03737A1F461D}
+		{E00E5D62-CDCF-4E2D-88A8-866153AB098A} = {EDB30A9B-9974-4794-A994-03737A1F461D}
+		{4AE61C49-0A9F-42B9-9EDB-F4F91E88D189} = {33D0D195-BDFD-4893-A93C-A90C7BEDF76E}
+	EndGlobalSection
+EndGlobal

src/Fml.Cli/Fml.Cli.fsproj

@@ -0,0 +1,16 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="Program.fs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Fml.Core\Fml.Core.fsproj" />
+  </ItemGroup>
+
+</Project>

src/Fml.Core/Fml.Core.fsproj

@@ -0,0 +1,23 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="Ast.fs" />
+    <Compile Include="Types.fs" />
+    <Compile Include="Lexer.fs" />
+    <Compile Include="Parser.fs" />
+    <Compile Include="Decls.fs" />
+    <Compile Include="Match.fs" />
+    <Compile Include="Infer.fs" />
+    <Compile Include="Value.fs" />
+    <Compile Include="Eval.fs" />
+    <Compile Include="Prelude.fs" />
+    <Compile Include="Bytecode.fs" />
+    <Compile Include="Vm.fs" />
+    <Compile Include="Interpreter.fs" />
+  </ItemGroup>
+
+</Project>

tests/Fml.Tests/Fml.Tests.fsproj

@@ -0,0 +1,32 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+    <GenerateProgramFile>false</GenerateProgramFile>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Compile Include="Tests.fs" />
+    <Compile Include="Program.fs" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.1.0" />
+    <PackageReference Include="xunit" Version="2.4.1" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+    <PackageReference Include="coverlet.collector" Version="3.1.2">
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+      <PrivateAssets>all</PrivateAssets>
+    </PackageReference>
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\src\Fml.Core\Fml.Core.fsproj" />
+  </ItemGroup>
+
+</Project>